inCharge®, Rolling Square’s first product, became one of the largest crowdfunding campaigns per community size, with more than 30

Rolling Square

Intent: Square wanted to provide a stronger error monitoring solution for its Point of Sales application and achieve a single source of truth for errors and crashes across its native applications. Result: By rolling out Bugsnag onto iOS, Square accesses all mobile stability management and error monitoring in one location, paving the way to introduce Bugsnag for all its future apps. Square Makes Merchant Services and Digital Payments Easy When Square, Inc. was founded in 2009, its objective was to provide an easier way for small business owners to accept credit cards from customers. Today, Square empowers companies of all sizes with a wide range of products and services for payments, loans, customer and employee management, and point of sale (POS) across multiple industries, including retail, food and beverage, and professional services. Over the years, Square has relied on various error monitoring solutions and used different tools for its Android and iOS applications. “We want to have a single source of truth for crashes across our apps, and we want to be able to apply multiple filters to triage an issue,” explains Anil Umarji, Engineering Manager, Quality, who oversees the Release Operations (RelOps) and Quality (QA) teams. Consolidating Error Monitoring for Native Apps is a Top Priority Seven years ago, Square’s Android team migrated to Bugsnag from previously using Crashlytics. Pierre-Yves (PY) Ricau, Staff Engineer, focuses on crashes and performance for Point of Sales (POS) and remembers why Square moved to Bugsnag for its Android error monitoring. “Crashlytics was originally built for iOS. When the company was acquired by Twitter, the team then built an Android solution that wasn’t as customizable and stable as we would have liked,” explains PY. “What Bugsnag brings to the table is extensive around things like custom indexing, filtering, and searching. It’s a game changer.” — PY Ricau, Staff Engineer In 2014, when Square adopted Bugsnag for Android, PY noticed an immediate improvement: “With Bugsnag, we have the source of a crash or error right there, which is something we didn’t have with Crashlytics. What Bugsnag brings to the table is extensive around things like custom indexing, filtering, and searching. It’s a game changer.” Today, Bugsnag is rolled out to Square’s full stack, including web and backend. The iOS team is finishing up its migration to Bugsnag from previously using Crashlytics, which is now Firebase. “We didn’t have a tool from the iOS perspective where we could apply multiple filters to triage an issue,” states Anil. “From a RelOps and QA perspective, we want to get the best of what’s on Android on iOS. After all, we have unique filters on Bugsnag, and the UI is pretty intuitive. We want that same functionality for iOS, too.” Bugsnag Error Details and Custom Filters Enable Experimentation, Investigation, and Timely Releases Because Square uses a lot of shared code across systems, it’s critical that any new features don’t break or affect other features. The move to Bugsnag for the iOS team will simplify QA and RelOps work by providing a single place to look for errors. “Point of sale is an intersection of all the other verticals at Square. Having POS for both Android and iOS on Bugsnag will help other teams know where the crashes and out-of-memory issues are,” explains Anil. “That’s the biggest advantage I can see from my team’s perspective.” The RelOps team currently uses Bugsnag for Android throughout its bi-weekly release development cycle and relies on Bugsnag to quickly address bugs that affect stability. “The Bugsnag dashboard is our go-to page every day to see what’s happening. There are two things we look at: production and our continuous testing,” states Anil. “We use phased rollouts for both Android and iOS, and we use Bugsnag to look at stack traces to see if a similar crash happened in the past and determine if it’s a new crash.” “The Bugsnag dashboard is our go-to page every day to see what’s happening.” — Anil Umarji, Engineering Manager, Quality “The investigation piece is where Bugsnag shines,” states PY. “We can add metadata to breadcrumbs, which helps us understand the steps that led to a crash. And, when you define custom filters, you can then define a list of crashes for a specific set of conditions.” All new features in Square are also behind a Bugsnag feature flag for easy identification. “From a feature stability perspective, tags help us to know if something broke with the new feature or if it’s something we’ve already found and tagged as one of our critical features,” explains Anil. “We also use custom tags in Bugsnag to make sure there are no regressions.” There’s one Bugsnag feature in particular that PY believes is a hidden gem. “When I don’t know exactly which crash I’m looking for, Bugsnag’s Timeline view is like gold. It provides visual clues about error rate changes and lets us filter, which is especially helpful for determining if an error is server-related. That type of information is invaluable.” “When I don’t know exactly which crash I’m looking for, Bugsnag’s Timeline view is like gold.” — PY Ricau, Staff Engineer Square Banks on Bugsnag to Encourage Product Ownership With teams using one solution for error monitoring and stability, Anil believes Bugsnag will further encourage ownership over the different parts of the applications. “Bugsnag has been a super helpful tool for us from an Android standpoint, and I hope very soon to replicate that with iOS as well,” states Anil. Looking forward, Square knows its partnership with Bugsnag will help achieve stability across its native applications and full stack. As Anil states, “One thing I really like about Bugsnag is the flexibility to develop what’s on top of what’s already there and the ability to ask for new feature sets from the Bugsnag team.” “Bugsnag is definitely made for the professional,” PY states. “And Bugsnag is still the best out there.” Previously published here.

Square Case Study: Bugsnag Struck Gold When Building the Timeline View

Adele, when Rolling in the Deep I have recently finished the first course of the Deep Specialization by Andrew Ng on Coursera and learned a bit more about neural networks, neurons, backward and forward propagation. This required me to devote some time to do it. Recalling a bit of calculus here and there. Matrices and derivatives said “hi” once again. I was glad to devote some time to play with these concepts from the past and use them as a bridge to learn something new. Learning Not much earlier I had also finished reading the book “Deep Work” by Cal Newport which brought to my mind the value and need for focus and deep concentration in a “distracted world”. Just like the author, I was never fond of open office spaces, where Bose noise cancelling devices became pretty much an essential supply to go through the day. One year ago I have discovered Cold Turkey — an app that allows you to block your own access to social networks and other distractions for a set period of time. The book just legitimized the thought that there is something missing, at least for people that enjoy periods of deep contemplation, something that got stolen from ourselves by ourselves, and that in many cases can be priceless. Some of the tactics to carve out time for deep concentration helped me to finish this course quite efficiently, while I have also completed other courses that go along particularly well with the “deep” philosophy. “Learning How to Learn” and the sequel “Mindshifter” by Barbara Oakley, that focus on helping people to be more effective in learning and developing a learning lifestyle have been in the leading positions of MOOC rankings. Together with Cal’s book these are a nice pack on depth in working and learning. At the same time I have continued my read of “The Human Condition” by Hannah Arendt — yes, I have read many other books since I have started this one, but this is taking me longer to finish, and watched the documentary “Hannah Arendt: The Life of the Spirit”. This mix of seemingly unrelated contents gave me literally, “food for thought”. The depth in deep Well, Andrew Ng, in one of the first lectures mentions that neural networks have been around for a long time, but since they have been relabeled as Deep Learning they seem to resonate more with the public, to capture the popular imagination. After all, “it’s deep”. When I think about deep thinking or learning for that matter, I think about people like Hannah Arendt that are able to develop long conversations with themselves and clinically dissect one topic. In one 1964 interview with Günter Gaus— a very interesting one- she mentions how she writes “in order to understand”, and if you read one of her books it seems she is doing just that — going through her reasoning, and zooming in the seemingly most fragile and difficult aspects, to examine, disentangle and conquer her own understanding of them. She doesn’t seem to be writing to explain something to someone else (sometimes it is easy to lose track of the reasoning), but she seems to be convincing herself of some of the arguments. But what does this have to do with deep learning or neural nets? . Just like Hannah they go trough the data, and converse with themselves to minimize error, to make their judgment closer to the truth. But unlike Hannah, and as mentioned several times by Garry Kasparov in his book “Deep thinking” — machines lack emotions. Which makes them relentless in performing this internal conversation. Neural nets power relies in their capacity to identify complex patterns that are hidden to the naked eye One of the most interesting insights of the MOOC “Learning How to Learn” was that the brain has two modes of cognition: the focused and the diffuse mode, and that people are thinking even when they seem to be doing nothing. It is good to make a break now and then from the deep work type of focused thinking to allow for unexpected connections to happen when you are not focusing our attention on anything in particular. I wonder how machines can do that or will be able to do that in the future. Kasparov mentions two types of search in computer chess: the type A/brute force one or the strategic and selective, that, when a assessing and planing a move, starts by focusing on a narrower but more probable range of options than the other type, that goes through them all. And how the force brute A seems to be dominating the programmers choice in our days, when it comes to designing computer chess games: “speed beats knowledge”. The two approaches have been competing for the spotlight in terms of chess games development but for the time being (and apparently unfortunately for Garry) it seems that being faster at evaluating all the possibilities beats slowly being focused in some more wisely selected ones. Machines that play but can’t play In any case the machines seem all focus, not needing to find time for some recreative breaks on order to get the absolute win. Kasparov mentions that for one of his colleagues “finding the truth in the chess board” meant this absolute win or lose regardless of who played better. “At the end of the day there are only three possible situations in chess: win, lose or draw”. Machines don’t need recreation, don’t get distracted and increasingly don’t take the long hours that humans take to be involved in deep work. So more than understanding if machines can be made squarely intelligent or not, or actually think or not, my question would be, can machines be deep? When I was reviewing the topic of matrix calculations, I have computed manually the multiplication of matrices that would take a computer a fraction of a second to process. For a neural of several layers it could take really long to perform the calculations manually — and in terms of the nomenclature, the higher the number of layers the deeper the network is. network So according to this, yes, machines can be deep, and can be faster to get deep than humans. But how come that when I think of machines they seem doomed to be shallow? I can imagine a robot that plays at the level of a Russian chess player but a robot that writes with the depth of a Russian novelist it is harder to conceive, or a robot philosopher. Not only because they don’t ask questions as Kasparov also mentioned, but because they are not able to suffer and I always associate depth with a certain capacity for suffering or capacity feeling for that matter. The transparency in deep Another instance in which machines are not so good at yet is transparency. While Hannah shows her reasoning to reach a conclusion, machines are much less transparent. In neural networks there is even what are called the hidden layers (all layers, besides the input and output layers), were the bulk of the computations take place but that resemble a black box with difficult, if not forbidden, access. We have inputs and outputs, as for what happens in between, machines cannot clearly articulate to humans. Perhaps I associate depth with depth at sea, where no matter how deep you dive you are always able to see the elements around you. It happens like that for human thinkers, that are able to convey their thought via language that makes it more or less transparent (depending on their capacity to communicate ideas to others and also themselves). As for machines it seems that depth is more like that of a pond or lake, where the you can see the bumps of Loch Ness but not its full frame. Mystery ‘bumps’ photographed by Clive Limpkin at Drumnadrochit. REXSCANPIX. Metro article 2015 The machine condition As a consequence, I don’t think I can admire machines, or that one day I can have a machine as hero. Not because they are not intelligent — honestly that can at times feel a bit overrated - but because they do not feel. I confess I was somewhat surprised by the seeming trauma that loosing to a machine caused to Kasparov — really? You lost to a machine? Keep calm and carry on. But I would like to see a machine have some kind of discussion and conversation with Hannah, go with the motions of her reasoning and give something back in return or write the letters that Hannah wrote to Karl Jaspers — pretty much a father for her- or Heidegger — the love of her life, and what would those letters mean. In the movie “Her”, where a lonely man falls in love with his virtual assistant Samantha (interpreted by Scarlett Johansson), he is not falling in love with the machine intelligence — I don’t recall any chess-like conversation but rather banal albeit intimate conversations at the end of the day, that could be uttered by anyone close enough, not a grandmaster. Theodore, when Rolling in The Deep in the Movie “Her” So, I repeat the question. Can machines be deep? Can machines have real deep conversations with other humans and perhaps other machines? And I don’t mean scripted, algorithmic, chess-like conversations, and (somewhat unfortunately) not even displaying the depth of reasoning of thinking and feeling of some writers and philosophers, but conversations that are able to strike a chord in the human heart. The moment the answer is yes — and Amazon’s Alexa seems to be pushing that moment to far (but we can, as always) be surprised - it is the moment that “depth” really matches the “depth” that popular imagination is used to, and is not somewhat misleading publicity. Furthermore, perhaps when we start framing the questions about machines in terms of depth and not (scripted) intelligence, we will stop thinking about machines as threats, as chess players that either allow us to win, lose or draw, but as co-authors of a richer and deeper life. After all, as Cal Newport mentions, making some edits to the original from Socrates that “the unexamined life is not worth living”, I also believe that a “life without depth is not worth living”. And machines are still not equipped to assist us with that. So call it everything, but don’t call it deep, just yet. Neural networks are getting quite good are identifying cats though… although some still are harder to recognize, like my friend’s cats below, that I used i one of the course exercises. I assure you they are as real as it gets 😸 “y=0.0, your algorithm predicts a non-cat picture” Sometimes it is still a bit like this: One of the Adele/Cat online memes. Didn’t know this was a thing until I searched for something to illustrate. I am not the author.

(Not) rolling in the deep: deep learning, deep thinking, deep working and shallow machines

So far, most of my playing with Generative AI has been on the prompt side, with no real look at the various settings you can tweak in your calls. As I'm still very new to this, I'm trying my best to take things slowly. But every time I open and see the settings on the right, I keep nagging myself to take a deeper look. Google AI Studio You can also see the various settings options in the default code Studio spits out: const generationConfig = {
	temperature: 0.9,
	topK: 1,
	topP: 1,
	maxOutputTokens: 2048,
};

const safetySettings = [
	{ category: HarmCategory.HARM_CATEGORY_HARASSMENT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
	{ category: HarmCategory.HARM_CATEGORY_HATE_SPEECH,	threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
	{ category: HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
	{ category: HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
]; I thought today I'd take a look at , as I had a rough idea of what it implied. Temperature, at a high level, refers to how 'varied' a particular generated response can be. As an example, if I were to say, "I like ____", then you could make a list of what the next word would be, rated by how likely it is: temperature very Cats (VERY LIKELY) Star Wars (LIKELY) Books (LIKELY) Vegetables (UNLIKELY) At the highest temperature value, there will be a of variety. At the lowest level, no variety. Now, from what I know, that does mean that every response will be the same. Just very similar. This post, , does a great job explaining temperature (and other settings). lot not "Creatively Deterministic: What are Temperature and Top_P in Generative AI?" While it's relatively easy in AI Studio to adjust the temperature setting you see above, what I really wanted was a tool to help me see multiple results at once. So, I built one. :) Temperature Testing Tool My tool begins with a simple prompt: This is pretty vanilla HTML, so I won't share the code here (I've got a link to everything down below). Upon hitting the button, that's where the magic begins. Here's the JavaScript: // Testing ranges for temperature
const tempRanges = [0, 0.3, 0.6, 1];

// How many times to test per temp.
const perTemp = 2;

let $status, $results;

document.addEventListener('DOMContentLoaded', init, false);
async function init() {
	document.querySelector('#submitBtn').addEventListener('click', handleSubmit, false);
	$status = document.querySelector('#status i');
	$results = document.querySelector('#results');
} I begin with some variable declarations and a listener for . The first two variable sections are the crucial ones. Temperature values go from 0 (focus on only the highest probable response) to 1 (be more creative), and I decided to test four values in that range. DOMContentLoaded For each range in the array of temperatures, I do two tests. My thinking was that two results would be enough to see the variance in one particular temperature value. Carrying on... async function handleSubmit(e) {
	e.preventDefault();
	$results.innerHTML = '';

	let prompt = document.querySelector('#prompt').value.trim();
	if(prompt === '') return;

	/*
	We are going to loop perTemp times for each tempRange. In order to not
	get stopped by Gemini for too many requests, and to provide feedback to the user, 
	I'll report after each tempRange
	*/
	for(temp of tempRanges) {
		$status.innerText = `Getting results for temperature ${temp}.`;
		let promises = [];
		for(let i=0; i<perTemp; i++) {
			promises.push(getResult(prompt, temp));
		}

		let results = await Promise.all(promises);
		let html = `<h2>Temperature ${temp}</h2>`;
		for(let i=0; i < results.length; i++) {
			html += `
<p>
Result #${i+1}:<br/>
${results[i]}
</p>`;
		}
		$results.innerHTML += html;
		console.log(results);
	}

	$status.innerText = ``;
	
}

async function getResult(prompt, temperature) {
	console.log(`Calling getResult with prompt ${prompt} and ${temperature}`);
	let body = {
		prompt, 
		temperature
	};
	let req = await fetch('/api', { method: 'POST', body: JSON.stringify(body)});
	return await req.json();
} In this code, I loop over the range of temperatures and then make my two sample calls. When done, I render it out to the screen. The last function simply passes my prompt and temperature to the backend API. I'll share a screenshot, but it's a wall of text. This is only a small portion: long The backend is a lightweight Node.js server that basically handles outputting my HTML and responding to the request by the client-side JavaScript. Let's take a look at that, specifically the portion handling the Google Gemini call: POST import { GoogleGenerativeAI, HarmCategory, HarmBlockThreshold } from '@google/generative-ai';

const MODEL_NAME = "gemini-pro";
const API_KEY = process.env.GOOGLE_AI_KEY;

const genAI = new GoogleGenerativeAI(API_KEY);
const model = genAI.getGenerativeModel({ model: MODEL_NAME });

async function callGemini(text, temperature) {

	const generationConfig = {
		temperature,
		topK: 1,
		topP: 1,
		maxOutputTokens: 2048,
	};

	const safetySettings = [
		{ category: HarmCategory.HARM_CATEGORY_HARASSMENT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
		{ category: HarmCategory.HARM_CATEGORY_HATE_SPEECH,	threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
		{ category: HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
		{ category: HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT, threshold: HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE, },
	];

	const parts = [
    	{text},
  	];

	const result = await model.generateContent({
		contents: [{ role: "user", parts }],
		generationConfig,
		safetySettings,
	});

	const response = result.response.candidates[0].content.parts[0].text;
	
	return response;
} This is pretty much the exact code spit out by Studio but wrapped into a function where the prompt and temperature can be passed in. This function has error handling, and that absolutely bit me in the butt. I'm going to be taking a look at those errors, and how to handle them, in a future blog post. no So what did I find? Results Here are the results of using the prompt: "Tell me a story about cats." First, temperature 0. Result 1 Once upon a time, in a quaint little town nestled amidst rolling hills, there lived a mischievous cat named Mittens. Mittens was known throughout the neighborhood for her playful antics and her insatiable curiosity. One sunny afternoon, as Mittens was basking in the warmth of the sunbeam that streamed through the window, she noticed a peculiar sound coming from the kitchen. Intrigued, she hopped off the window sill and tiptoed towards the source of the noise. Upon entering the kitchen, Mittens discovered a group of kittens huddled around a bowl of milk. Their tiny paws were eagerly reaching for the sweet liquid, and their eyes sparkled with delight. Mittens, being the adventurous cat she was, couldn't resist joining in on the fun. With a playful leap, Mittens landed gracefully in the midst of the kittens. She purred loudly, her tail swishing back and forth as she rubbed against their soft fur. The kittens, initially startled by the sudden intrusion, soon warmed up to Mittens' friendly presence. Together, they formed a circle around the bowl of milk, their whiskers twitching as they lapped up the delicious treat. Mittens, being the eldest and most experienced cat, took it upon herself to teach the kittens proper table manners. She showed them how to take turns and how to avoid spilling the milk. As the kittens learned and grew, they developed a deep bond with Mittens. They looked up to her as their mentor and protector. Mittens, in turn, cherished her role as the leader of the pack. She spent her days playing with the kittens, teaching them valuable life lessons and keeping them safe from harm. Word of Mittens' extraordinary kindness and wisdom spread throughout the town. People would often bring their cats to her, seeking her advice and guidance. Mittens welcomed each and every cat with open paws, offering them comfort, support, and a sense of belonging. And so, Mittens became known as the "Guardian Cat" of the town. She was loved and respected by all, both humans and cats alike. Her legacy lived on for generations, inspiring countless cats to follow in her paw prints and spread joy and kindness wherever they went. Result 2 Once upon a time, in a quaint little town nestled amidst rolling hills, there lived a mischievous cat named Mittens. Mittens was known throughout the neighborhood for her playful antics and her insatiable curiosity. One sunny afternoon, as Mittens was basking in the warmth of the sunbeam that streamed through the window, she noticed a peculiar sound coming from the kitchen. Intrigued, she hopped off the window sill and tiptoed towards the source of the noise. Upon entering the kitchen, Mittens discovered a group of kittens huddled around a bowl of milk. Their tiny paws were eagerly lapping up the delicious liquid, their whiskers quivering with delight. Mittens, unable to resist the temptation, joined the kittens and began to partake in the feast. As they drank, Mittens couldn't help but notice that one of the kittens was smaller and weaker than the others. It struggled to keep up with its siblings, and its eyes held a look of longing. Mittens, being the compassionate cat that she was, decided to help the little kitten. With a gentle nudge, Mittens pushed the other kittens aside and made room for the weaker one. She then curled her tail around the kitten, providing it with warmth and comfort. The little kitten, grateful for Mittens' kindness, nuzzled against her fur and began to purr softly. As the kittens continued to drink their milk, Mittens couldn't help but feel a sense of fulfillment. She had not only satisfied her own hunger but had also brought joy and comfort to a fellow creature. From that day forward, Mittens became known as the neighborhood's guardian angel. She would often be seen playing with the kittens, teaching them how to climb trees and chase butterflies. She would also bring them food and shelter when they were in need. The kittens, in turn, adored Mittens and would follow her everywhere she went. They would purr and rub against her legs, showing their affection and gratitude. And so, Mittens lived a long and happy life, surrounded by the love and companionship of her feline friends. She taught the town's residents the importance of kindness and compassion, and her legacy lived on long after she was gone. Notice that both start off the same and then diverge. To save on space, I'll skip to temperature 1 next. Result 1 Once upon a time, in a bustling city called Willow Brook, there lived a calico cat named Mittens. Mittens had a reputation for being a fearless explorer, always curious and eager for adventure. One day, Mittens embarked on her biggest expedition yet. She had heard rumors of a secret garden hidden deep within the city park, and she was determined to find it. When nightfall came, Mittens began her adventure, carefully sneaking out of her home and into the park. The park was silent, illuminated only by the soft glow of the moon. As she tiptoed through the winding paths, a faint scent of flowers carried by the wind caught her attention. Mittens followed the scent until she stumbled upon a large tree. Its branches were laden with bountiful blooms, and a gentle breeze sent petals raining down on her. Suddenly, a soft voice whispered, "Welcome, little traveler." Mittens looked around, her eyes widening in astonishment. Sitting on a branch was a beautiful cat; its fur shimmered like the night sky. "I am Esmerelda," the cat said, "and you are Mittens, the brave calico." Mittens was amazed. She had heard stories about Esmerelda, a magical cat said to hold the secret to unlocking the hidden garden. "Yes, Mittens," Esmerelda continued, "you have found the Enchanted Garden. But to enter, you must pass three challenges." Without hesitation, Mittens agreed. Her first challenge was to find a golden key hidden within the roots of an oak tree. With her sharp claws and determined spirit, Mittens discovered the key, its surface glowing brightly. Next, Esmerelda asked Mittens to gather dewdrops from the heart of a moonflower blossom. As Mittens gracefully leaped and climbed the tall stems, she carefully collected the sparkling dew in a tiny seashell. Finally, Mittens' last challenge was to sing a song that would make the trees sway and the flowers bloom. As Mittens lifted her voice, her melodious' tune enchanted the garden, which sprang to life with vibrant colors and dazzling lights. Esmeralda smiled, "Well done, little traveler. You have passed the challenges." With a gentle paw, Esmerelda touched the large oak tree, causing it to slowly open like a door, revealing an awe-inspiring paradise. Inside the Enchanted Garden, Mittens found lush meadows, sparkling fountains, and exotic creatures playing among the trees. It was a place of wonder and joy as if every storybook she had ever heard had come true. Mittens spent the entire night exploring the magical realm, amazed by its beauty. As dawn broke, she turned to Esmerelda and said, " Thank you for sharing this incredible place with me. Esmerelda purred softly. "You are welcome, Mittens. As long as you believe in magic, the garden will always be here for you to explore." From that day forward, Mittens became the guardian of the Enchanted Garden, a place where she could always find solace, friendship, and a sense of belonging among the natural beauty of Willow Brook. And so, the legend of the brave calico and the Enchanting Garden lived on, brought to life of the belief in magic and the wonders that can be found when one dares to explore beyond the ordinary. Result 2 Once upon a time, in a small and charming town called Willow Creek, nestled amidst rolling hills and blooming meadows, there lived two extraordinary cats. One was a sleek and graceful Siamese named Luna, whose shimmering white fur and piercing blue eyes radiated elegance and mystique. Her every movement exuded nimbleness, gliding through the streets of Willow Creek with an air of regal composure. Meet the second cat, a tabby by the name of Max, a playful and mischievous soul adorned with a coat of orange and black stripes. His sparkling green eyes twinkled with a mischievous glint; ears always perked, ever alert to the adventures that awaited him. His playful antics had become a legend among the townspeople, who were often greeted by his friendly antics and joyful meows. The companionship between Luna and Max was a sight to behold. They were inseparable, roaming the cobblestone streets together, their playful pursuits leading them to alleyways and secret paths known only to them. Their friendship was a true testament to the unwavering spirit and unbreakable bond between cats. During the day, they would bask lazily in the warm sunlight that bathed the town square, absorbing the melody of children playing and the laughter of friends sharing stories. At night, under the velvet sky adorned with shimmering stars, they would chase elusive fireflies and embark on daring expeditions, exploring the town's hidden nooks and crannies, their soft paw steps barely disturbing the tranquil silence. Many a local came to rely on the presence of Luna and Max, knowing that their playful chases and affectionate purrs brought an unexplainable joy and warmth to the heart. The elderly, feeling isolated, found solace in their presence, witnessing a simple yet profound beauty in their interactions. Children were captivated by their antics, watching in delight as they climbed trees or chased each other through the flowerbeds. One day, a traveling circus arrived in Willow Creek, filled with fanfare and vibrant colors. Luna and Max, captivated by the excitement, couldn't resist exploring the wonders this circus held. As they ventured into the largest tent, they were greeted with the mesmerising spectacle of trained cats, performing incredible feats of agility and balance. Inspired by their newfound passion, Luna and Max made a daring decision - they ran away to join the circus! They honed their skills tirelessly, practicing their balancing acts and performing stunning leaps. Their dedication and unwavering friendship caught the attention of the ringmaster, who recognized their talent and potential. Finally, the moment arrived when Luna and Max took center stage, their hearts pounding with excitement and anticipation. The audience, holding their breath in anticipation, witnessed an extraordinary performance, a mesmerizing ballet of agility and grace. Luna's elegant poise and Max's playful energy combined to create a symphony of motion that left the spectators awe-inspired. News of Luna and Max's incredible talents spread like wildfire, and they became stars of the circus, sharing their joy and laughter with audiences of all ages. Their unwavering friendship remained the heart of their performances, a symbol of the magical bond between cats that touched the hearts of all who witnessed their amazing journey. And so, Luna and Max, once ordinary cats roaming the streets of Willow Creek, found their destined path in the spotlight of the circus ring, leaving behind a legacy of a friendship that defied the ordinary and inspired the extraordinary in others. As you can tell, even if you only skimmed it, these are much more varied. I found having all these variations on screen at once, from the same prompt, a easy way to help me understand the impact of temperature. If you want to try this yourself, you can grab the bits here: real https://github.com/cfjedimaster/ai-testingzone/tree/main/temp_tester Download the code, the required bits, and set an environment variable for your Google API key. Run the script ( ) and it will open up a web server on port 3000. Lastly, just open that up with your browser. npm i node script.js As always, let me know what you think. I've got some ideas for other tools like this as a way of learning generative AI! Also published . here

Testing Generative AI Temperature Settings with Some Cat Stories

367 Stories To Learn About Web Design

Scientific American, Volume XXIV., No. 12, March 18, 1871 by Various, is part of the HackerNoon Books Series. You can jump to any chapter in this book . To Manufacturers of Knitted Goods. here To Manufacturers of Knitted Goods. is now in England, completing arrangements so as to be able to supply his American friends with his improved Knitting Machines with greater dispatch, and with all the latest improvements. He would beg to call especial attention to JOHN KENT The Improved Rib Top Frame, now so well known, and acknowledged to be the best rib top frame ever built, for speed and quality of goods produced. Price, delivered free in New York, $520, currency. The Improved Circular Web Frame, for drawers and shirts, built of any size and gage. Price for a 4-head set, 17 inch to 20 inch diameter, $810, currency, delivered free in New York. The Circular Stocking Frame, from 2 in. to 5½ in. diameter. These circular frames, with my last improvements, are as near perfection as possible. The Patent Full-fashioned Shirt, Drawers and Stocking Frames produce the most perfect goods ever made by steam-power machinery, and cost fifty per cent less to keep in repair than any other Knitting Machine. Built 10 to 24 gage, and from 30 to 140 inch wide, to order. The Improved Circular Looping Frame, for putting on shirt cuffs, drawers bands, clearing the top of circular shirts, &c., built to order, of any size, from 2 in. to 22 in. diameter, and of any gage. Steel Needles and Sinkers to pattern. Persons wishing to order while Mr. Kent is in England, will please address JOHN KENT, Nottingham, up to April 12th, or, if they prefer, may send through depot. Address JOHN KENT, 348 Pearl st., New York. PUMPS. —For Description, Price Lists etc., of the Best Centrifugal Pump ever invented, with Overwhelming Testimony in its favor, send for new illustrated pamphlet (40 pp.) to Messrs. HEALD, SISCO & CO., Baldwinsville, N. Y. BRICK PRESSES. **FOR RED AND FIRE BRICK.
\ Factory 309 S. Fifth street, Philadelphia, Pa. S. P. MILLER. ST. JOSEPH, Mo., Nov. 10, 1870. T. R. BAILEY & VAIL, Lockport, N. Y.: Gentlemen:—The Lathe you shipped me has arrived, and I have it in full operation. It works perfectly, and I think it the best lathe made in the world for Bedstead and Chair work. I would recommend it to any one desirous of obtaining such a lathe. Yours truly, H. R. BRISTOL. WOOLEN MILL FOR SALE. With House and 3 acres of land, Seymour, Ct., (Naugatuck Valley,) 2 miles from R. R. depot. Never-failing stream. 3 ft. fall, dam and wheel in good condition. Inquire of JAS. ORMSBEE, on the premises. Portable & Stationary Steam Engines AND HOISTING ENGINES. A good article at low prices. Every machine warranted. Send for descriptive Price List. H. B. BIGELOW & CO., New Haven, Conn. PATENT BANDSAW MACHINES Of the most approved kinds, of various sizes , to saw bevel as well as square, without inclining the table, by , 452 to 456 Tenth ave., New York. Price $250, $275, $350, and $400. At present (Oct. 16), there are in operation, in this city alone, 88 of our machines. Send for circular. Manufacture, also, an improved saw-filing apparatus; price, $30. Have also on hand a large stock of best French Bandsaw Blades. FIRST & PRYIBIL L. & J. W. FEUCHTWANGER, 55 Cedar st., New York, Chemists, Manufacturers, and Importers of Specialities, Silicates, Soda and Potash, Chloride of Calcium, Peroxide of Manganese, Hydrofluoric Acid, Metallic Oxides, Steel and Glass Makers' and Potters' Articles, Publishers of Treatises on "Soluble Glass," "Gems," and "Fermented Liquors." PIMLICO BRACES, SOMETHING NEW. THIS invention is based on a strictly scientific principle, and is a valuable improvement on old style suspenders. It is simple in construction, and combines the qualities of Brace and Suspender. They are unequaled for elegance, durability and comfort. Manufactured at the Monumental Silk Works, Baltimore. JOHN M. DAVIES & CO., Sole Agents, 384 & 386 B'd'y, N. Y. Dr. J. ARMSTRONG'S (Patent) Improved Heater, Filter, Lime Extractor, and Condenser Combined, For Steam Boilers. MANUFACTURED BY Toledo, Ohio. Armstrong & Starr, Send for Circulars. Formerly Armstrong & Welsh. —An Engine, 12x36 in. cylinder, and two Boilers, 4x15 feet, in good order, will be sold cheap. FOR SALE. J. J. TAYLOR & CO., 68 Courtlandt st., New York. Trapping and Fishing. All about it. Sent free. Address "Hunter," Hinsdale, N. H. HUNTING, First Premium awarded by Am. Inst., 1870 T. H. McALLISTER, Optician, 49 Nassau st., N. Y. Rare and Beautiful Flowers —AND— CHOICE VEGETABLES Can always be obtained by Sowing The Seventeenth Annual Edition of their celebrated "SEED CATALOGUE AND GUIDE TO THE FLOWER AND KITCHEN GARDEN," is now ready for distribution. It contains Four Beautifully Colored Lithographs, and about 300 choice Engravings of favorite Flowers and Vegetables, 136 pages of closely-printed matter, and a list of Twenty-five Hundred species and varieties of Flower and Vegetable Seeds, with explicit directions for their culture, and much other useful information upon the subject of Gardening. A copy will be mailed to all applicants inclosing 25 cts. Regular customers supplied gratis. Address B. K. BLISS & SONS, Nos. 23 Park Place, and 20 Murray st., P. O. Box No. 5712. New York. Science for the Million. THE Boston Journal of Chemistry, Devoted to the Science of Home Life, the Arts, Agriculture, and Medicine. JAMES R. NICHOLS, M.D., WILLIAM A. ROLFE, A.M., } Editors. ONE DOLLAR PER YEAR. A paper which commends itself at once to Physicians, Druggists, Chemists, Teachers, Farmers, Mechanics—in short, to Professional and Practical Men of every class. The Domestic Recipes and Formulæ for Art Processes are of themselves worth many times the cost of subscription. Specimen Copies Sent Free. Address **BOSTON JOURNAL OF CHEMISTRY,
\ 150 Congress st., Boston. FOOT LATHES, And all kinds of small tools. Illustrated catalogue free. GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass. AGENTS WANTED.—To sell Stephens' which embraces a Rule, Level, Square, Plumb, Bevel, Slope Level, T Square, etc., in one compact tool. These instruments retail at $3.50 each, and energetic salesmen can make money by selling them among mechanics. We warrant them in every particular, as the construction and graduation is faultless. Send for descriptive circular, cuts, and terms. Patent Combination Rule, STEPHENS & CO., Riverton, Conn. FELT. THE BEST, CHEAPEST and MOST DURABLE non-conductor known, for sale by the Original Manufacturer, at the BOILER FELTING WORKS, 46 Courtland st., New York. Universal Wood Worker. For Agricultural, Railroad, Car, Carriage, and Wagon Works, Planing Mill, Sash, Door and Blind, Bedstead, Cabinet and Furniture Factories. McBETH, BENTEL & MARGEDANT, Hamilton, O. , Inventor's Exchange 245 Broadway, N. Y., "Am. Agriculturist" Building. TANGIBLE INVENTIONS NEGOTIATED. No goods received unless ordered. B. F. KEMP, Proprietor. MACHINISTS' TOOLS, at greatly reduced prices. Also, some Woodworth Planers and Second-hand Tools. 97 to 113 R. R. ave., Newark, N. J. E. & R. J. GOULD, successors to Gould Machine Co. N. B. PATENTED Articles introduced. Also, State and County Rights sold for Inventors. STONE, PUGH & CO., 55 N. 6th st., Philadelphia. G OLDEN HILL Seminary for young ladies, Bridgeport, Conn. Miss Emily Nelson, Principal. 1826 USE THE VEGETABLE PULMONARY BALSAM. 1870 The old standard remedy for Coughs, Colds, Consumption. "Nothing Better." Cutler Bros. & Co., Boston. T HE CALVERT IRON ROLLING MILLS are offered at private sale. These mills are situated in the city of Baltimore, and cover 1½ acres of ground. The Machinery is of the most approved description, for making all sizes of round and square bar iron, from ¼ in. to 3 in. diameter, and flat bars of all widths, up to 7 inches. The buildings are ample and commodious. In addition to the Rolling Mills are two brick buildings (50x125 feet and 40x90 feet), now containing an 80 H.P. Engine, and Spike Machinery, but which could be used for the manufacture of Nails, Horseshoes, or any other branch of heavy hardware. This property offers an unusual opportunity to capitalists, and will be sold at a reasonable price. For further description address MARSHALL  P. SMITH, P. O. Box 1158, Baltimore, Md. BURDON IRON WORKS.—Manufacturers of Pumping Engines for Water Works, High & Low Pressure Engines, Portable Engines and Boilers, of all kinds, Sugar Mills, Screw, Lever, Drop, & Hydraulic Presses, Machinery in general. HUBBARD & WHITTAKER, 102 Front st., Brooklyn. ENGINES AND MACHINERY FOR SALE, at a great sacrifice. Two new Steam Engines, 12 and 20 horse power; 1 Faribain's Riveting Machine; 1 large Power Shears; 1 ditto Table Punch; 2 ditto Flange Punches; 1 set Power Bending Rolls; together with a large lot of Turning Lathes, Drilling Machines, Machinists' and Smiths' Hand Tools, Pulleys, Hangers, and 6 Fairbanks' Platform Scales. Send for catalogue, or apply at the South Brooklyn Steam Engine Works, cor. Imlay and Summit sts., Brooklyn. SHINGLE AND HEADING MACHINE— Law's Patent with Trevor & Co.'s Improvements. The Simplest and Best in use. Also, Shingle, Heading and Stave Jointers, Equalizers, Heading Turners, Planers etc. AddressTREVOR & CO., Lockport, N. Y. AGENTS WANTED—($225 A MONTH) by the AMERICAN KNITTING MACHINE CO. Boston, Mass., or St. Louis, Mo. THE UNITED STATES Brick Machine IS THE BEST IN THE WORLD, BECAUSE IT MAKES THE , , and GREATEST NUMBER THE BEST THE CHEAPEST BRICKS. It is the Perfection of Simplicity. It is Durable, and not likely to get out of Repair. See Scientific American, Sept. 17, 1870. For Descriptive Circular apply to F. C. WELLS, President, Room 13, 98 Madison st.,\CHICAGO. MACHINES can be seen in operation at the Company's Works, Chicago; at rear 59 Ann st., New York city; and at Novelty Iron Works, corner of Delord and Peter sts., New Orleans. PREPARED Asphalte Roofing Felt. This new prepared production is ready coated, and can be applied on the roof without further trouble. It is easy of application, and does not require any repairs for a long time. It is more durable than some slates, and has been found a suitable substitute for iron or tin roofs. It has a sanded or stony surface, which renders it Exposed to the most intense fire, and sparks falling upon it, it will not propagate the fire. Under the influence of the sun it will not run, which makes it specially adapted to hot climates. Its easy application and pleasing appearance have made it a favorite roofing material throughout all the Indies and other colonies. Being not cumbrous for transport, it is of invaluable service to settlers and farmers in far remote districts. When used for temporary purposes it may be taken off and applied again to another construction. It replaces common Asphalting on Terraces, Lobbies, Counting-houses, Office Floors, etc.; is a great preservative against dampness and vermin, and equalizes the temperature. It is 32 inches wide, and made in rolls of 25 yards each. Send for circular to UNINFLAMMABLE and FIRE-PROOF. E. H. MARTIN, 70 Maiden Lane and 9 Liberty St., N. Y. J. J. H. GREGORY'S Seed Catalogue. My Annual Illustrated Catalogue, containing a list of many new and rare Vegetables, some of which are not found in any other catalogue, and all the standard vegetables of the farm and garden (over one hundred of which I grow on my three seed farms), with a carefully selected list of flower seed, will be sent free to all. All my seed is sold under three warrants: 1st. That all money sent shall reach me. 2d. That all seed ordered shall reach the purchaser. 3d. That my seeds shall be fresh and true to name. JAMES J. H. GREGORY, Marblehead, Mass. THE NEW WILSON Under-Feed Shuttle\SEWING MACHINES! $25 cheaper than any other! For Simplicity, Durability and Beauty they stand For Stitching, Hemming, Tucking, Felling, Quilting, Cording, Binding, Braiding, Gathering, Gathering & sewing on gathers, For particulars address unrivalled! they are unexcelled! Wilson Sewing Machine Co., Cleveland, O., or St. Louis, Mo. , **NEW and 2d-HAND.—
\ Send for Circular. Chas. PLACE & CO., 60 Vesey st., New York. MACHINERY MACHINISTS. Illustrated Catalogue and Price List of all kinds of small Tools and Materials sent free to any address. GOODNOW & WIGHTMAN, 23 Cornhill, Boston, Mass. P. BLAISDELL & CO. MANUFACTURERS of the "BLAISDELL" PATENT DRILL PRESSES, with quick return motion, Agricultural Drills, Improved Engine Lathes, from 12 in. to 28 in. swing, Planers, Gear Cutters, Boring Mills, Hand Lathes, and other first-class Machinists' Tools. Jackson st., Worcester, Mass. Patent BEDSTEAD FASTENING. The and ever invented. Best, Cheapest, Strongest FASTENING Rights for States and Territories for sale. Address JOHN DOMINGOS and                     BENJAMIN ESSIG, Sacramento, Cal. BENT, GOODNOW & CO., Boston, Mass., Publishers of , sell Patent Rights and goods of all kinds. Orders solicited. "PATENT STAR" AGENTS WANTED. Send stamp for copy. TO THE WORKING CLASS.—We are now prepared to furnish all classes with constant employment at home, the whole of the time or for the spare moments. Business new, light and profitable. Persons of either sex easily earn from 50c. to $5 per evening, and a proportional sum by devoting their whole time to the business. Boys and girls earn nearly as much as men. That all who see this notice may send their address, and test the business, we make this unparalleled offer: To such as are not well satisfied, we will send $1 to pay for the trouble of writing. Full particulars, a valuable sample which will do to commence work on, and a copy of —one of the largest and best family newspapers published—all sent free by mail. Reader, if you want permanent, profitable work, address The People's Literary Companion D. C. ALLEN & CO., Augusta, Maine. IMPORTANT TO  MACHINISTS.—The Best Metal for all Machine Uses is the MARTIN STEEL, made by The New Jersey Steel and Iron Co., Trenton, N. J. This steel is made by an entirely different process from any other and is tougher than wrought iron. It can be turned without annealing, being entirely free from hard spots. Every one who uses it pronounces it just what they have long wanted, for a multitude of uses, such as Crank Pins, Lathe Spindles and Screws, Cotton Machinery Rollers, Saw and Fan Spindles, etc., etc. Also, particularly adapted for Firebox Plates. Prices low. Send for further information, or a sample, stating use to which it is to be applied. OTIS' SAFETY HOISTING\Machinery. **OTIS, BROS. & CO.
\ No. 309 BROADWAY, NEW YORK. Union Emery Wheels. Solid and with Stone Center. UNION STONE CO., Boston, Mass. Branch Office, 93 Liberty st., N. Y. General Agents for the Am. Twist Drill Co.'s Superior Grinder and other Emery Wheel Machinery and Tools. Send for Circular. \ WOODBURY'S PATENT** Planing and Matching and Molding Machines, Gray & Wood's Planers, Self-oiling Saw Arbors, and other wood working machinery. S. A. WOODS, Send for Circulars. } 91 Liberty street, N. Y.; 67 Sudbury street, Boston. RI**CHARDSON, MERIAM & CO.,
\ Manufacturers of the latest improved Patent Daniels' and Woodworth Planing Machines, Matching, Sash, and molding, Tenoning, Mortising, Boring, Shaping, Vertical, and Circular Re-sawing Machines, Saw Mills Saw Arbors, Scroll Saws, Railway, Cut-off, and Rip-saw Machines, Spoke and Wood Turning Lathes, and various other kinds of Wood-working Machinery. Catalogues and price lists sent on application. Manufactory, Worcester, Mass. Warehouse, 107 Liberty st., New York. 17 1 Reynolds' TURBINE WATER WHEELS. The Oldest and Newest. All others only imitations of each other in their strife after complications to confuse the public. We do not boast but quietly excel them all in staunch reliable, economical power. Beautiful pamphlet free. Geo. TALLCOT, 96 Liberty st., New York. Gearing, Shafting.

To Manufacturers of Knitted Goods

Scientific American, Volume XXIV., No. 12, March 18, 1871 by Various, is part of the HackerNoon Books Series. You can jump to any chapter in this book . Business and Personal here Business and Personal The Charge for Insertion under this head is One Dollar a Line. If the Notices exceed Four Lines, One Dollar and a Half per Line will be charged. The paper that meets the eye of manufacturers throughout the United States—Boston Bulletin, $4.00 a year. Advertisements 17c. a line. Half Interest for sale in established Machinery Depot, new and second-hand. Steam fitting connected. Small capital, with energy, required. Address T. V. Carpenter, Advertising Agent, Box 773, New York. See advertisement of a Woolen Mill for sale. A bargain. I am active, have a clear record, and some capital. How can I make some money? F. Carmill, Box 1268, Boston, Mass. Pattern Letters for Machinists, Molders, and Inventors, to letter patterns of castings, all sizes. Address H. W. Knight, Seneca Falls, N. Y. Improved mode of Graining Wood, pat. July 5, '70, by J. J. Callow, Cleveland, O. See illustrated S. A., Dec. 17, '70. Send stamp for circular. Can a round, spring-steel rod be drawn to any desired length, with a true taper to a point, with equal elasticity the whole length, and rolled temper? What is the price per hundred pounds, and where can they be procured? Answer "Sportsman," Malone, N. Y. Manufacturers of Foot Lathes and other light machinery please address Geo. B. Kirkham, 167 E. 33d st., N. Y. city. Business of importance! Safety Kerosene Lamps (Perkins & House's Patent). Explosion or breaking impossible; light equal to gas, and no odor. Families supplied and canvassers appointed, by Montgomery & Co., 42 Barclay st., New York, or Cleveland, O. All parties wanting a water wheel will learn something of interest by addressing P. H. Wait, Sandy Hill, N. Y., for a free circular of his Hudson River Champion Turbine. Ashcroft's Low Water Detector, $15; thousands in use; 17 year's experience. Can be applied for $1. Send for circular. E. H. Ashcroft, Boston, Mass. Wanted.—Machines for manufacturing Pails, Tubs, and Matches. Also, competent man to superintend construction of buildings, and manage all parts of business when complete. Address, with descriptive circulars, price, etc., No. 266 Lexington avenue, New York. Turbine Water Wheels, Portable and Stationary Engines, Gang and Circular Saw Mills, Rolling Mill Machinery, and Machinery for Axe Manufacturers, manufactured by Wm. P. Duncan, Bellefonte, Pa. For best Power Picket Header in use, apply to Wm. P. Duncan, Bellefonte, Pa. New Blind Wirer and Rod Cutter. B. C. Davis & Co., Binghamton, N. Y. Self-testing Steam Gage. There's a difference between a chronometer watch and a "bull's eye." Same difference between a self-tester and common steam gage. Send for Circular. E. H. Ashcroft, Boston, Mass. See advertisement of L. & J. W. Feuchtwanger, Chemists, N. Y. $3.50. Stephens' Patent Combination Rule, Level, Square, Plumb, Bevel, etc. See advertisement in another column. Agents wanted. American Boiler Powder Co., Box 315, Pittsburgh, Pa., make the only safe, sure, and cheap remedy for "Scaly Boilers." Orders solicited. Belting that is Belting.—Always send for the Best Philadelphia Oak-Tanned, to C. W. Arny, Manufacturer, 301 Cherry st., Phil'a. E. Howard & Co., Boston, make the best Stem-winding Watch in the country. Ask for it at all the dealers. Office 15 Maiden Lane, N. Y. For mining, wrecking, pumping, drainage, and irrigating machinery, see advertisement of Andrews' Patents in another column. The best place to get Working Models and parts is at T. B. Jeffery's, 160 South Water st., Chicago. Brown's Coalyard Quarry & Contractors' Apparatus for hoisting and conveying material by iron cable. W. D. Andrews & Bro, 414 Water st., N. Y. Improved Foot Lathes. Many a reader of this paper has one of them. Selling in all parts of the country, Canada, Europe, etc. Catalogue free. N. H. Baldwin, Laconia, N. H. Peteler Portable R. R. Co. contractors, graders. See adv'ment. E. P. Peacock, Manufacturer of Cutting Dies, Press Work. Patent Articles in Metals, etc. 55 Franklin st., Chicago. Peck's Patent Drop Press. Milo Peck & Co., New Haven, Ct. Millstone Dressing Diamond Machine—Simple, effective, durable. For description of the above see Scientific American, Nov. 27th, 1869. Also, Glazier's Diamonds. John Dickinson, 64 Nassau st., N. Y. Steel name stamps, figures, etc. E. H. Payn, M'f'r, Burlington, Vt. Cold Rolled-Shafting, piston rods, pump rods, Collins pat. double compression couplings, manufactured by Jones & Laughlins, Pittsburgh, Pa. Keuffel & Esser 116 Fulton st., N. Y., the best place to get 1st-class Drawing Materials, Swiss instruments, and Rubber Triangles and Curves. For Solid Wrought-iron Beams, etc., see advertisement. Address Union Iron Mills, Pittsburgh, Pa., for lithograph, etc. For the best Self-regulating Windmill in the world, to pump water for residences, farms, city buildings, drainage, and irrigation, address Con. Windmill Co., 5 College Place, New York. The Merriman Bolt Cutter—the best made. Send for circulars. H. B. Brown & Co., Fair Haven, Conn. Taft's Portable Hot Air, Vapor and Shower Bathing Apparatus. Address Portable Bath Co., Sag Harbor, N. Y. (Send for Circular.) Glynn's Anti-Incrustator for Steam Boilers—The only reliable preventive. No foaming, and does not attack metals of boilers. Price 25 cents per lb. C. D. Fredricks, 587 Broadway, New York. For Fruit-Can Tools, Presses, Dies for all Metals, apply to Bliss & Williams, successor to May & Bliss, 118, 120, and 122 Plymouth st., Brooklyn, N. Y. Send for catalogue. 2d-hand Worthington, Woodward and Novelty Pumps, Engines 25 to 100 H.P., 60 Horse Loc. Boiler. W. D. Andrews & Bro., 414 Water st., N. Y. Agents wanted, to sell the Star Bevel. It supersedes the old style. Send for Circular. Hallett & White, West Meriden, Conn. English and American Cotton Machinery and Yarns, Beam Warps and Machine Tools. Thos. Pray, Jr., 57 Weybosset st., Providence, R. I. For small, soft, Gray Iron Castings, Japanned, Tinned, or Bronzed, address Enterprise Manufacturing Company, Philadelphia. Conklin's Detachable Rubber Lip, for bowls, etc., works like a charm. For Rights, address O. P. Conklin, Worcester, Mass., or A. Daul, Philadelphia, Pa. To Ascertain where there will be a demand for new machinery or manufacturers' supplies read Boston Commercial Bulletin's Manufacturing News of the United States. Terms $4.00 a year. Facts for the Ladies. In 1870, Mrs. W. made, with her Wheeler & Wilson machine, 2,255 vests, besides doing her family sewing for six persons. The Pittsburgh, Pa., "Leader" says: "The firm of Geo. P. Rowell & Co. is the largest and best Advertising Agency in the United States, and we can cheerfully recommend it to the attention of those who desire to advertise their business scientifically and systematically in such a way; that is, to secure the largest amount of publicity for the least expenditure of money." at American Institute Fair for 1870, Pratt's Astral Oil was pronounced the safest and best. After an exhaustive trial, Its Varieties, Causes, Symptoms, and Cure. By E. P. Miller, M.D. Paper, 50cts.; Muslin, $1. Address Miller, Haynes & Co., 41 West Twenty-sixth st., New York city. Dyspepsia: How Wasted and How Preserved; or, Abuses of the Sexual Function, their Causes Effects and Means of Cure. By E. P. Miller M.D. Paper, 50cts. Address Miller, Haynes & Co., 41 West Twenty-sixth st., New York city. Vital Force: About HackerNoon Book Series: We bring you the most important technical, scientific, and insightful public domain books. This book is part of the public domain. Various (2006). Scientific American, Volume XXIV., No. 12, March 18, 1871. Urbana, Illinois: Project Gutenberg. Retrieved https://www.gutenberg.org/cache/epub/19180/pg19180-images.html This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at , located at . www.gutenberg.org https://www.gutenberg.org/policy/license.html

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