Phyllo

phyllo

Field, Forest and Farm by Jean-Henri Fabre, is part of the HackerNoon Books Series. You can jump to any chapter in this book here . THE PHYLLOXERA (Continued) CHAPTER LIII. THE PHYLLOXERA (Continued) “The yellow plant-louse found on the roots of the grape-vine,” resumed Uncle Paul, “has no bent for traveling: wingless, sluggish, and big-bellied, it is ill adapted to locomotion. Where once its sucker has implanted itself, there the creature is glad to abide as long as the place is tenable. But when the rootlet dies and begins to decay, then a new refectory must be sought out, with a better-furnished table. Accordingly the louse has to move. A persistent explorer, it knows how, with patience and in course of time, to make its way through cracks in the soil from one root to another, and dares even to climb to the surface, where, proceeding in the open air, it emigrates from the exhausted vine-stock to the neighboring one rich in sap; and there it pushes down to the roots through some fissure in the ground. “To this slow-goer a single one of our steps would be a journey of excessive length. Therefore, to propagate its kind far and wide, it must have other and quicker means than the extremely deliberate method of locomotion just described. This other method for planting colonies at a considerable distance has already been illustrated for us by the [ ]green louse of the rosebush. Like that species, the phylloxera has a special division of winged travelers, and it is these that propagate the race throughout the grape-growing district. 289 “At the time of the greatest midsummer heat there make their appearance, amid the throng of yellow lice covering the roots, certain individuals with longer bodies, which soon change their skin and then bear on their sides two pairs of black stumps, the sheaths of four future wings. These are the nymphs destined for emigration. These nymphs leave their subterranean abode and climb up to the foot of the vine-stock, or sometimes even out upon the surface of the ground. There another change of skin takes place, whereupon we behold the winged insect, superior in form to its underground relatives. “It measures a little more than a millimeter in length, not including the wings. These latter, transparent and iridescent, extend far beyond the length of the body, and the upper ones are wide, rounded, and slightly smoke-colored at the end, the lower ones narrow and shorter. They are supported by strong sinews that denote great power of flight. With its large, diaphanous wings, its broad head and big eyes, its belly ending in a blunt point, and its yellowish color, the traveling insect bears some resemblance to a very small cicada. Such, in brief, is the phylloxera commissioned to propagate the race at a distance. “We have here no longer to do with the sluggish pot-bellied creature that needs all its strength to [ ]move from one root to the next adjoining; we behold an agile denizen of the air, capable of covering with the swiftness of an arrow a distance of several leagues, especially when aided by a favorable wind. During the warm season of July and August these winged insects take flight and settle in swarms on the vineyards not yet ravaged. They alight on the leaves, where their suckers perform their function in sober moderation. 290 “To stuff themselves like gluttons, after the manner of their kindred that live on the roots, is not their way. Hence their own depredations are of no importance. Unfortunately, however, it is their mission to do us a most disastrous disservice by infesting, one after another, the adjacent vineyards, peopling the still unaffected districts with underground ravagers. All take part in this; all, without exception, set to work laying eggs. “These eggs are few in number, it is true, each insect laying at most but half a score amid the cotton-like down of the buds and young leaves. But the aggregate is none the less enormous, since in this strange family we have thus far encountered none but mothers. We have just seen that all the wingless phylloxeras on the roots lay eggs, and now we find that all their winged kindred on the leaves do likewise. “This excessive fecundity would in the end exhaust the insect and result in its extinction if there were no seasons of quietude for renewing the vitality of the race. Yellowish in color like the eggs of [ ]the underground phylloxera, those of the winged insect are of two kinds: one of a larger size, the other only about half as large. The first produce females, the second males. Here, at last, we have the two sexes, whose coöperation will assure indefinite prosperity to the race. That is the normal order governing all animal life. 291 “But what queer little creatures! Yellow, wingless, stubby, they look like the lice on the roots, but even smaller. These phylloxeras of the third kind are dwarfs in a family of dwarfs. They have no stomachs for digesting, no suckers for puncturing the leaves and extracting their sap. Self-nourishment, however slight, is not at all their affair. The laying of eggs that shall renew the vigor of the race, the placing of them where they will be safe, and then a speedy death—that is the sole purpose of their brief span of life. “For some days these dwarfs, male and female, wander over the vines and mate, one with another; then, in the fissures of the wrinkled bark, the mothers lay each an egg, a single egg, of enormous size in comparison with the smallness of the layer, greenish in color and sprinkled with fine black spots. This egg takes the name of ‘winter egg,’ being destined to pass the cold season fastened by a little hook to the vine’s bark. After this the layer of the egg shrivels up into a reddish point and dies.” “But how do these eggs manage to get through the winter without freezing?” asked Louis. “Hens’ [ ]eggs or birds’ eggs would be good for nothing after being left out-doors from autumn till spring.” 292 “That is true,” assented Uncle Paul; “nevertheless these minute germs of future insect life seldom fail to hatch when warm weather returns. From them come plant-lice like those on the roots of the vine. Each new-born louse crawls down the natal vine, hunts around on the ground until it finds a crack in the soil, and then makes its way through this fissure to settle at last on a rootlet, into which it plunges its sucker. At ease thenceforth beneath the surface of the ground and in the bosom of abundance, it does not long remain alone. Close to its fixed position it deposits its little heap of yellow eggs, whence there quickly issues a new generation. In like manner each member of the family surrounds itself with a family of its own; and so on by several successive repetitions of the process until, from having but a single occupant at first, a root speedily becomes covered with a legion of destroyers. To this population of recent origin we must not forget to add the older inhabitants that have passed the winter under ground and have only waited for the return of the warm season to resume their own laying of eggs on the roots of the vine. “Let us recapitulate these singular ways of the phylloxera. The species comprises three forms of insects, each having its own peculiar structure, its manner of life, its separate function. The customary animal unity is here a trinity: three different insects are grouped in a single species.[ ] 293 “The sedentary members are wingless and live on the roots. All lay eggs and are followed by several generations likewise capable of laying eggs. Under the pricking of their collective suckers, numberless in the aggregate, vineyards are ruined. There we have the formidable foe, the ravager whose sucker, hardly visible to the naked eye, has already cost us more than ten milliard francs. “The migrating members are furnished with large wings. They live on the leaves and lay each a small number of eggs in the down of the buds. Like their sedentary kinsfolk, they all lay eggs. Their peculiar office is to disseminate the race from one vineyard to another. “The members endowed with sex come under the operation of the general law: they are divided into male and female. Unprovided with wings, sucker, or stomach, they wander over the vine without taking any nourishment. Each mother lays a single egg, the winter egg, whence issues in the spring a sedentary phylloxera, which makes its way down to the roots, establishes itself there, and becomes the head and center of a new colony. “How contend against this foe which, by reason of its numbers and its underground abode, defies our attempts to exterminate it? Three principal methods are employed. In the lowlands the vineyards are flooded and kept under a good depth of water throughout the winter. This submersion causes the death of the phylloxera at the roots of the plant. As a second method, through holes bored to the roots [ ]the soil is injected with an asphyxiating fluid called sulphur of carbon, the fumes of which instantly kill all insects that they reach. The difficulty is to do a thorough job and leave no survivors. A third device is employed by those who import from America certain wild vines much hardier than our cultivated ones, but producing inferior fruit. These American plants resist the attacks of the phylloxera, and continue to flourish where our vines would succumb. On these wild stocks, as soon as they are well rooted, are grafted our native vines, and thus is obtained a grape-vine of two-fold quality, resisting by the hardy nature of its root the phylloxera’s assaults, and bearing, on its engrafted shoots, the incomparable fruit of our old vineyards.” 294 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. Jean-Henri Fabre (2022). Field, Forest and Farm. Urbana, Illinois: Project Gutenberg. Retrieved October https://www.gutenberg.org/cache/epub/67813/pg67813-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 www.gutenberg.org , located at https://www.gutenberg.org/policy/license.html.

THE PHYLLOXERA (Continued)

Field, Forest and Farm by Jean-Henri Fabre, is part of the HackerNoon Books Series. You can jump to any chapter in this book here . THE PHYLLOXERA CHAPTER LII. THE PHYLLOXERA “In our talks on ants a few words were said concerning their milch-cows, plant-lice. You haven’t forgotten those curious herds with udders in the form of two little tubes that emit, from time to time, a sweetened liquid. The ant comes and milks these cows, caressing them as it does so with its two antennæ. It fills itself with their milk, making its stomach serve the purpose of a milk-pail, and then runs back, all bursting with the delicious fluid, to disgorge it into the nurslings’ mouths. “These ant-cows are watched over with jealous vigilance; in case of need they are pastured within enclosures, for fear of marauders. So far all is for the best: the ants’ cattle afford us some passing amusement, and apparently they are open to no serious reproach. But if we pursue our inquiries further the plant-lice will reveal themselves to us under a far more serious aspect. “Let us speak first of rosebush lice. You wish to pluck a rose. Its perfume fills the air, its form and color rejoice the eye. But just as you are about to break the stem what do you find under your fingers? At the base of the flower and all over the branch that bears it, the superb plant is contaminated [ ]with a legion of green lice; a host of odious vermin has taken possession of it; the magnificent has associated with it the disgusting. The eye is offended; the fingers recoil before this species of animated bark which the slightest pressure turns into a sticky mush. Let us pluck the rose nevertheless, and before shaking the lice from it let us examine them a moment. 280 “They are light green in color, big-bellied, and wingless. With a little attention we distinguish the two minute posterior horns whence oozes the liquid on which the ants regale themselves. They have, underneath, a sucker, straight and very slender, a sort of bore which they push into the tender bark to extract from it the juices on which they live. The sucker once implanted at any convenient point, the animalcule seldom stirs from that spot. If it does decide to move a little, it is because its well has run dry and it must bore another close beside it. A promenade of merely the length of the branch is a liberty that only the most adventurous dare allow themselves. As a rule, the plant-louse sticks to the spot where it was born, to the very end.” “But how can the stem of a rose get so completely covered with those little green lice?” asked Emile. “That is easily explained,” answered his uncle. “Plant-lice multiply very rapidly, since each one, without exception, from the first to the last, whatever their number, becomes capable in a few days of procreating a family. The newly born settle down beside their mothers, and are themselves soon surrounded [ ]by their own progeny. These in turn, in a little while, have offspring of their own; and so on, indefinitely, as long as the season lasts. Thus the stem, the branch, the entire plant, become covered with lice so closely packed one against another that in places the real bark is hidden by this bark of vermin. 281 “Have you ever seen a garden-patch of broad beans overrun by black lice? There, better than anywhere else, may be seen the rapidity of propagation. On that green expanse appears at first a small black stain, announcing the beginning of the invasion. It is a family of lice installed at the top of a beanstalk, the tenderest part of the plant, where the insects’ suckers can work to best advantage. The gardener, as soon as he is aware of what is going on, hastens to cut off this part of the stalk and crush it under his heel. He hopes to exorcise the evil by destroying this nest of vermin. “His hope is short-lived. A few days later, instead of one plant invaded there are dozens. He lops off again; he turns up the remaining leaves and examines them one by one; he crushes what vermin he finds, taking all pains to make the extermination complete. Will he make an end of it this time? Not at all: the black hordes reappear in greater numbers than ever; the invaded stalks can no longer be counted. A few lice that escaped the slaughter were enough to infest the whole patch of beans. The foliage hangs down, foul and withered; the young pods, riddled with punctures and corrugated with [ ]scars, shrivel up and can grow no larger. For this ill there is no remedy; the harvest is ruined. 282 “The gardener pulls it all up and throws it on the dung-hill. His care and vigilance have been unable to arrest the invasion. In vain he crushed legions at a time under his angry heel: in a few days the half-dozen survivors had propagated a larger colony than ever. Man is hardly in a position to contend successfully against this lowly vermin which braves extinction by virtue of its countless numbers. “As I told you, the plant-louse does not like to change its place. It plants its sucker on the very spot where it has just been born, and thenceforth sticks to that spot, filling its stomach with sap and surrounding itself with a family. This love of repose explains to us very well how the twig of a rosebush or the top of a beanstalk undergoes a progressive colonization; but it does not account for the distant propagation of the species. “With its home-keeping habits the insect ought to be confined within narrow limits, on a single leaf and not on all leaves, on one rosebush and not on the neighboring rosebushes. But as a matter of fact it is disseminated everywhere. When one patch of beans becomes infested, those in the neighborhood are equally unfortunate; when one rosebush shows a colony of plant-lice, all those around it are similarly visited. No vegetable growth can defend itself from the pest. How, then, is it that this obese animalcule, which totters with fatigue after one step forward, succeeds in passing from rosebush to rosebush, [ ]from garden to garden? By what means is it able to spread in all directions without limit? 283 “Let us examine a number of rosebushes, and we shall have a prompt answer to our question. In addition to the wingless plant-lice, big of belly and all grouped on the tender twigs, we shall see others, green like the first ones, but more elegant in form, of greater freedom of movement, and provided with four wings, very beautiful wings too, diaphanous and gleaming with rainbow tints. These creatures are no lazy sap-bibbers forever squatting over the well their sucker has bored. They are seen to come and go, circulating briskly among the stationary herd, inspecting the foliage, passing from branch to branch, and even taking flight for some distant goal. They are the travelers of the family. Their function is to propagate the race in the surrounding district, with the aid of their wings, and even at considerable distances when a puff of wind carries them thus far. “Two classes, then, dissimilar though related, are to be noted among the green lice of the rosebush and the black ones of the beanstalk, as also among countless others. The members of one class have no wings; they pass their lives where they were born, and multiply in serried legions. Those of the other class, which is relatively small, are equipped with wings. Confined to no one spot, they fare forth as some passing breeze or their own strength of wing may determine, and deposit in favorable localities the germs that are to serve each as the beginning of [ ]a community of wingless plant-lice. The first kind procreate on the spot with a fecundity almost beyond belief; the second take leave of the stationary family and go out to start new centers of population in various quarters. The first propagate without limit; the second colonize. 284 “To soil the stem of a rose with a coating of lice is not exactly a capital offense; but to lay waste a field of beans, the hope of the farmer, is a far more serious matter. Yet even that is as nothing when compared with other depredations committed by plant-lice. There is a species of these insects that lives underground, subsisting on the roots of the grape-vine. Oh, the hateful creature! Never has agriculture known anything to equal the ravages it commits; no floods or droughts or inclement seasons have ever wrought such woes. Its terrible sucker has, up to the present time, caused us losses estimated at the fabulous sum of ten milliard francs. What a mouthful for a miserable little louse hardly visible to the naked eye! And to think that the combined efforts of nations cannot succeed in exterminating this pest! Alas, how feeble is mere force when confronted with the exceedingly minute infinitely multiplied! “This destroyer of the vine is known as the phylloxera, a name strange to our tongue, but losing nothing of its impressiveness in translation. ‘Phylloxera’ means ‘witherer of leaves.’ The plant-louse thus denominated does indeed cause the foliage of the vine to wither up—not acting on the leaves directly, [ ]it is true, but attacking the roots. These, done to death by the insect’s sucker, cease to draw from the soil the nourishment needed by the vine. The vine-stock wastes away, and with it the leaves, which become yellow and withered. 285 Vine-pest (Phylloxera Vastatrix) a, Healthy vine rootlet; b, rootlet showing nodosites; c, rootlet in decay; d, female pupa; e, winged female, or migrant. (Hair lines show natural sizes.) “It is not merely the foliage, then, that the phylloxera dries up; it withers and kills the whole vine. Moreover, the name it bears was not invented expressly for it, but was borne by another before the ravager of vineyards became known. The louse that was first called phylloxera lived at the expense of the oak-tree and took up its station on the leaves, sucking the sap from them. There you have the true witherer of leaves. The vineyard louse has therefore [ ]inherited an old appellation which fails to indicate fully the seriousness of the creature’s depredations. 286 “This last-named insect is a tiny yellowish louse, plump of body, but hardly discernible to untrained eyes, its length being barely three quarters of a millimeter. It lives in clusters on the minute ramifications of the roots wherever the bark is tender enough to enable it to push in its sucker. Its ranks are so dense that the infested rootlets wear a continuous coating of vermin which stains the fingers with yellow. It lays its eggs in little heaps in the interstices that occur in the swarming colony; and these eggs are oval in shape and sulphur-yellow at first, but turn brownish as the moment for hatching approaches. “From these eggs there come, in a few days, new layers of eggs, which settle down beside the earlier comers and add their own progeny to the already overgrown family. Thus, as long as the season continues favorable, these myriad numbers of successive generations are added to the existing myriads, until the thread-like rootlets become completely hidden by the accumulated layers of eggs and the eggs themselves. “Riddled with punctures, the rootlets swell up at intervals and present the appearance of a string of elongated seeds. Thus deformed, fatally injured in their delicate suckers, the roots cease to imbibe the nutritive juices of the soil, the famished vine languishes [ ]for a time, putting forth only feeble shoots that are incapable of bearing fruit, and at last the whole plant dries up and dies. To secure its own prosperity the louse has killed its nurse.” 287 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. Jean-Henri Fabre (2022). Field, Forest and Farm. Urbana, Illinois: Project Gutenberg. Retrieved October https://www.gutenberg.org/cache/epub/67813/pg67813-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 www.gutenberg.org , located at https://www.gutenberg.org/policy/license.html.

THE PHYLLOXERA

The Story-book of Science by Jean-Henri Fabre, is part of the HackerNoon Books Series. You can jump to any chapter in this book here . THE BIG EATERS CHAPTER XXII. THE BIG EATERS “INSECTS propagate themselves by eggs, which they lay, with admirable foresight, where the young will be sure to find nourishment. The little creature that comes from the egg is a larva, a feeble grub, which, most often, has to shift for itself, procure at its own risk food and shelter—the most difficult thing in this world. In these painful beginnings it cannot expect any help from its mother, dead some time before; for in insect life the parents generally die before the hatching of the eggs that produce the young. Without delay the little larva sets to work. It eats. It is its sole business, and a serious one, on which its future depends. It eats, not only to keep up its strength from day to day, but above all to acquire the plumpness necessary for its future metamorphosis. I must tell you—and this perhaps will surprise you—that an insect ceases to grow after attaining its final perfect form. It is known, too, that there are insects—among others, the butterfly of the silkworm—that do not take any nourishment at all. “A cat is at first a tiny little pink-nosed creature, so small that it could rest in the hollow of the hand. In one or two months it is a pretty kitten that amuses itself at a mere nothing, and with its nimble paw whips the wisp of paper that one throws before it. Another year, and it is a tom-cat that patiently watches for mice or joins battle with its rivals on the roof. But, whether a tiny creature hardly able to open its little blue eyes, or a pretty playful kitten, or a big quarrelsome tom-cat, it has always the form of a cat. “It is otherwise with insects. The swallow-tail, under its form of butterfly, is not first small, then medium, then large. When, for the first time, it opens its wings and takes flight, it is as large as it ever will be. When it comes out from under ground, where it lived as a grub, when for the first time it appears in the daylight, the June bug is such as you know it. There are little cats, but no little swallow-tails nor little June bugs. After the metamorphosis, an insect is what it will be to the end.” “But I have seen small June bugs flying round the willows in the evening,” objected Jules. “Those little June bugs are of a different kind. They will always remain the same. Never will they grow and become common June bugs, any more than a cat would grow into a tiger, which it resembles so much. “The grub alone grows. At first very small on coming out of the egg, little by little it acquires a size in conformity with the future insect. It gathers the materials that the metamorphosis will use,—materials for the wings, antennæ, legs, and all those things that the larva does not have, but that the insect must have. Out of what will the big green worm that lives in dead wood, and must some day become a stag-beetle, make the enormous branched mandibles and the robust horny covering of the perfect insect? Of what will the larva make the long antennæ of the capricorn? Of what will the caterpillar make the large wings of the swallow-tail? Of that which the caterpillar, larva, and worm amass now, with thrifty hoarding of life-supporting matter. “If the little pink-nosed cat were born without ears, paws, tail, fur, mustaches, if it were simply a little ball of flesh, and should some day have to acquire all at once, while asleep, ears, paws, tail, fur, mustaches, and many other things, is it not true that this work of life would necessitate materials gathered together beforehand and held in reserve in the fatty tissues of the animal? No thing can be made from nothing; the smallest hair of the cat’s mustache shoots forth at the expense of the substance of the animal, substance which it acquires by eating. Goat Moth “The larva is in precisely this case: it has nothing, or next to nothing, that the perfect insects must have. It must therefore amass, in view of future changes, materials for the change; it must eat for two: for itself first, and then for the insect that will come from its substance, transformed and, in a sense, recast. So the larvæ are endowed with an incomparable appetite. As I have said, to eat is their sole business. They eat night and day, often without stopping, without taking breath. To lose a mouthful, what imprudence! The future butterfly would perhaps have one scale less to its wings. So they eat gluttonously, take on a stomach, become big, fat, plump. It is the duty of larvæ. “Some attack plants; they browse on the leaves, chew the flowers, bite the flesh of fruit. Others have a stomach strong enough to digest wood; they hollow out galleries in the tree-trunks, file off, grate, pulverize the hardest oak, as well as the tender willow. Others, again, prefer decomposed animal matter; they haunt infected corpses, fill their stomachs with rottenness. Still others seek excrement and feast on filth. They are all scavengers on whom has developed the high mission of cleansing the earth of its pollution. You would sicken at the mere thought of these worms that swarm in pus; yet one of the most important services, a providential service, is rendered by these disgusting eaters which clear away infection and give back its constituent elements to life. As if to make amends for its filthy needs, one of these larvæ will later be a magnificent fly, rivaling polished bronze in its brilliancy; another, a beetle perfumed with musk, its rich coat vying with gold and precious stones in splendor. Phylloxera “But these larvæ devoted to the work of general sanitation cannot make us forget other eaters, of whom we are victims. The grubs of the June bug alone sometimes multiply so rapidly in the ground that immense tracts are denuded of vegetation, which is gnawed at the roots. The forester’s shrubs, the farmer’s harvests, the gardener’s plants, just when everything seems prosperous, some fine morning, hang withered, smitten to death. The worm has passed that way, and all is lost. Fire could not have committed more frightful ravages. A miserable yellow louse, hardly visible, lives under ground, where it attacks the roots of the grape vine. It is called phylloxera. Its calamitous breed threatens to destroy all our vineyards. Some grubs, small enough to lodge in a grain of wheat, ravage the wheat in our granaries and leave only the bran. Others browse the lucerne so that the mower finds nothing left. Others, for years, gnaw at the heart of the wood of the oak, poplar, pine, and divers, other large trees. Others, which turn into those little white butterflies flying around the lamp in the evening and called moths, eat our cloth stuffs bit by bit, and finish by reducing them to rags. Others attack wainscoting, old furniture, and reduce them to powder. Others—But I should never get through if I were to tell you all. This little people to which we often disdain to pay the slightest attention, this little race of insects, is so powerful on account of the robust appetite of its larvæ, that man ought seriously to reckon with it. If a certain grub succeeds in multiplying beyond measure, whole provinces are threatened with the tragic fate of starvation. And we are left in perfect ignorance on the subject of these devourers! How can you defend yourself if the enemy is unknown to you? Ah, if I only had the management of these things! As for you, my dear children, while waiting for our talks to be resumed with more detail concerning these ravagers, remember this: the larvæ of insects are the great eaters of this world, the providential demolishers that finish the work of death and thus prepare for the work of life, since everything, or nearly everything passes through their stomach.” 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. Jean-Henri Fabre (2018). The Story-book of Science. Urbana, Illinois: Project Gutenberg. Retrieved https://www.gutenberg.org/cache/epub/56795/pg56795-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 www.gutenberg.org , located at https://www.gutenberg.org/policy/license.html.

THE BIG EATERS

THE HARICOT-WEEVIL

Field, Forest and Farm by Jean-Henri Fabre is part of the HackerNoon Books Series. Read this book online for free on HackerNoon! : Field, Forest and Farm Title : Jean-Henri Fabre Author : Florence Constable Bicknell Translator : April 11, 2022 [eBook #67813] Release date : English Language Table of Links Chapter﻿s I. The Staff of Life II. The History of Tobacco III. The Origin of Fertile Soil IV. Different Kinds of Soil V. Different Kinds of Soil (Continued) VI. Potash and Phosphorus VII. Phosphates and Nitrogen VIII. Vegetation and the Atmosphere IX. Lime X. Lime in Agriculture XI. Plaster of Paris XII. Plaster of Paris in Agriculture XIII. Natural Fertilizers—Guano XIV. The Stalk of the Plant XV. The Root XVI. Buds XVII. Adventitious Buds XVIII. Bulbs and Bulblets XIX. Tubers—Starch XX. Uses of Starch XXI. History of the Potato XXII. Ascending Sap XXIII. Descending Sap XXIV. Tree-Pruning XXV. Pinching—Bud-Nipping XXVI. Making Fruit Trees Bear XXVII. The Seed XXVIII. The Seed’s Food-Supply XXIX. Germination[vi] XXX. The Blossom XXXI. Pollen XXXII. The Grain of Wheat XXXIII. Cultivated Plants XXXIV. Different Ways of Propagating XXXV. Layering XXXVI. Slipping XXXVII. Grafting XXXVIII. Grafting (Continued) XXXIX. Grafting (Concluded) XL. Rotation of Crops XLI. Rotation of Crops (Continued) XLII. Land-Drainage XLIII. Paring and Burning XLIV. Wine-Making XLV. The Stag-Beetle XLVI. Sheath-Winged Insects XLVII. The June-Bug XLVIII. Caterpillars and Butterflies XLIX. Ants L. The Ant-Lion LI. Venomous Animals LII. The Phylloxera LIII. The Phylloxera (Continued) LIV. Nocturnal Birds of Prey LV. The Smaller Birds LVI. Birds’ Nests LVII. Migration of Birds LVIII. Carrier-Pigeons LIX. Some Prehistoric Animals LX. The Origin of Coal LXI. The Farmer’s Helpers LXII. The Farmer’s Helpers (Continued) 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. Jean-Henri Fabre (2022). Field, Forest and Farm. Urbana, Illinois: Project Gutenberg. Retrieved October https://www.gutenberg.org/cache/epub/67813/pg67813-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 www.gutenberg.org , located at https://www.gutenberg.org/policy/license.html.

Field, Forest and Farm by Jean-Henri Fabre - Table of Links

THE BLACK-BELLIED TARANTULA

AN INVADER.—THE HARICOT-WEEVIL

THE SPIDERS

EVIDENCE OF THE DESCENT OF MAN FROM SOME LOWER FORM

Mutual Affinites of Organic Beings

The Beautiful and Damned: Book II, Chapter I - The Radiant Hour 

Cryptocurrencies and blockchain have suffered turbulent times and the landscape continues to evolve. Remember when crypto surged 2000% in 2017 and FOMO reigned — even your Aunt was calling you up asking how she’d gotten her hands on some of that gold dust. Bitcoin was the popular cool dude in the room. Then everything cratered. Cryptocurrency became like a bad smell, it garnered a ponzi scheme reputation in some markets and by association it brought its cousin blockchain down with it. It’s all unfortunate because blockchain, with its robust trust system, is proving to be as profoundly revolutionary as the internet was, and crypto allows people to benefit from lower fees, fraud reduction, instancy, and an enticing lack of barriers. Because blockchain is to assets what the internet is to content — for the first time in history you can move value instantly from one place to the other side of the world with no intermediary. The thing is it’s not really accessible or digestible to everyone and therefore it’s too complicated for immediate widespread adoption; managing private keys and buying and selling crypto is complex; you need to open an account on an exchange, get a wallet, manage keys and passwords. In most countries you need to pass lengthy and complex Know Your Customer hurdles. There’s just so much friction involved; a transaction takes a long time, uses a lot of energy and involves a lot of risk (bitcoin is very easy to lose). When it’s not a necessity, why bother with the hardship? The climate is changing fast as our digital lifestyle begs for self-custody; increased security, increased efficiency and mainstream readiness. We are in the middle of a revolution in payments and this is a time of opportunity — even the Bank of England and the US government are deciding about introducing CBDC (Central Bank Digital Currency). Its recognition of the necessity for change is proof that there are future needs in a digital economy that the current system will not meet. There is a necessity to improve availability and usability of money, to address the consequences of a decline in cash to establish building blocks for better cross-border payments and of course to establish resilience. . We want to make crypto more human — . At Tangem, we want to make it easy for everyone to transact on a digital ledger we want to make digital transactions more human We want to make sure you can safely and easily transact and store your digital currency securely wherever you are, in a way that’s so easy that there’s zero learning curve, so even your can do it. It’s the perfect gift to initiate someone into crypto, while being as capable as an HSM (Hardware Security Module). Babushka Our cards are physical manifestations of digital assets — so by holding one of our cards you are holding say, bitcoin. Think of it like a very, very secure wallet. The Tangem Card harnesses the power of blockchain by computing sophisticated cryptography on a tiny chip, long story short — there are no pesky passkeys to remember (because the key is generated within the chip, which absolutely no one can access). All you need to do is tap to transact, much like you do in many other areas of your life, be that getting on the tube, buying something at a 7eleven or buying a coffee in a coffee store. In short you don’t need to be blockchain literate. We see ourselves as a gateway to financial inclusion, to the ecosystem that gives you all the benefits listed above. We also wanted to make the process fun and beautiful. So without further ado meet our bird collection cards, a motif for freedom because that’s exactly what these cards should give you access to… 1.) Bitcoin BTC Snowy Owl TangemCard Meet our surrounded by a blossoming Helichrysum. Snowy Owl : Snowy owls are native to Arctic regions in North America and the Palaearctic. Males are almost all white, while females have more flecks of black plumage. Juvenile snowy owls have black feathers until they turn white. Fun fact Get one here: https://bit.ly/3a8PuPT 2.) Ethereum ETH Dove TangemCard Our surrounded by Crassula erosula ‘Campfire.' Doves are amazing animals. Their capacity to find their way home over hundreds, even thousands of kilometres is unrivalled in the animal kingdom. This uncanny ability has seen them used for centuries to deliver messages for royalty, military leaders and other notable figures. Dove Fun Fact: Doves mate for life. You can get your hands on our ETH cards here: https://bit.ly/2J80KjB 3.) Stellar Lumens XLM Pheasant TangemCard The glorious surrounded by Thymus Citriodorus ‘Lemon Thyme’. A pheasant can reach a flight speed of up to 60mph. Pheasants are social birds and flock together. Despite common belief Pheasants are not native to Britain: it’s thought that the Romans first brought them here. pheasant You can get one at: https://bit.ly/2QLD3BO 4.) Ripple XRP Sparrow TangemCard The surrounded by ‘Golden Bamboo’. Sparrow Phyllostachys Aurea Facts: Sparrows are very sociable birds and live in flocks. Few birds are happier in the company of humans than the sparrow. Find one here: https://bit.ly/39m0yIj 5.) Bitcoin Cash BCH Cardinal TangemCard Presenting . Here the Cardinal basks in Ceanothus ‘Dark Star’ (California Lilac). You’ll often find him mid song. The Cardinal : they’re named after catholic bishops due to their particular shade of red that’s reminiscent of their gowns. Fun fact Find one here: https://bit.ly/2Jf6U1g hashtag It’s likely that you have an affinity with one or the other, but just as these birds have the freedom to move through blue skies, transcend borders and deliver messages in the most simple and naturalistic way, so do we hope that these Tangem Cards enable autonomy, freedom and the free flow of value to whomever you’d like to transact with and introduce a new world of frictionless value transfer.

Simplify and Secure Your Cryptocurrency Transactions with Tangem Cards [New Launch]

Heading into my sophomore year at the University of Michigan, I needed one more “honors” class to qualify for an additional check mark on my degree but the classes I wanted didn’t fit into my schedule. I had already taken “Great Books” and “Great Books II,” and another other class I was considering had mandatory discussions on Friday mornings, an instant disqualifier. That left me with just one option: a 20-person seminar called “Imagination.” I showed up the first day with low expectations for the prospects of real learning but high expectations for what the course could do for my GPA — but as the class kicked off, my professor quickly disabused me of both notions. After introducing himself and addressing every single member of the class by name from memory, he walked up to the board and wrote the single most intimidating phrase I had ever seen: “Ontogeny recapitulates phylogeny.” This thirteen-syllable-three-word formulation, my professor explained, was based on the work of biologist and would be the foundational idea of our course. You may have heard of Haeckel’s famous illustration of animal embryos that start their development looking similar before the more evolutionary advanced species continue through additional stages (see above). Ernst Haeckel I never did realize what this had to do with imagination, but I did find a way to translate the phrase into Minnesotan-friendly English: This implies that, for instance, we expect the learning of the individual child to follow the method by which all of humanity learned about the world. The concept behind the drawing is that process of the individual creation (“ontogeny”) mirrors (“recapitulates,” or recaps) the process of the creation of the species (“phylogeny”). Patterns found in the large can also often be found in the small . Some years later, I’ve now forgotten most of what I learned in college. I can’t tell you all that much about Human Evolutionary Anatomy, my Spanish is rusty, and although I do remember my microeconomics, it always takes me a hot second to remember on which axes P and Q sit. But against all odds, Haeckel’s recapitulation theory has stuck with me. It’s a powerful idea, and I’ve recently realized that it applies well to my current work in the blockchain world. In 2017, a number of scam Initial Coin Offerings appeared out of nowhere. Most began with little more than a whitepaper and a dot-io domain name; even the team was optional, as some founders . Many rapidly captured the public’s imagination with grandiose claims of an idyllic, decentralized future, then weaponized that attention to accumulate massive amounts of capital via ICO (a strategy that the ). preferred not to exist at all SEC just declared to be in violation of securities law The treasure troves of cash those teams acquired — normally in the tens of millions of dollars — put the pressure on those projects to deliver what they had promised, but most failed. Teams were either too hesitant to put that much capital at risk, got mired in the political debates that surround such financially consequential decisions, or simply ran off with their fraudulently acquired riches. In any case, whether due to fraud, hacks, scams, or simple incompetence, these great booms generally ended in near-total collapse. The thought that struck me — and that I hope struck you as you read the above description — is how well the launch of an individual ICO mirrors that of the broader journey of blockchain technology’s first ten years. In both cases, the general arc bends from lofty promises to high expectations to crushing collapse. Following the ICO boom of 2017 — and all the sketchy behavior that surrounded it — there was a massive bust as the blockchain bubble popped. More than $700 billion of total market capitalization for cryptocurrencies was destroyed over the course of a long, hard year for traders, and, for many, those dreams of a decentralized, idyllic future died along with it. The hope, of course, is that blockchain can recapture the imagination of the public — that phylogeny can diverge from ontogeny, and the rut in which blockchain finds itself today is just an obstacle on the path to glory, not a site for eventual burial. We’ve recently seen glimpses of “crypto spring” on the horizon, but fully recovering from this first public failure will not be easy. As entrepreneurs try to leverage blockchain technology to create products that people need, they will face another challenge: the aftertaste of distrust that lingers among the general public. More on blockchain and trust coming soon! I’m working on a book called “Trust(less),” to be released later this year. Follow me on Twitter ( @cdkeil ) to stay in touch.

Phylogeny, Ontogeny, and Blockchain

Understanding Statistical Language Models and Hierarchical Language Generation

পরিসংখ্যানগত ভাষার মডেল এবং শ্রেণিবিন্যাস ভাষা প্রজন্ম বোঝা

Statistische Sprachmodelle und hierarchische Sprachgenerierung verstehen

Comprensión de los modelos de lenguaje estadístico y la generación de lenguaje jerárquico

Comprendre les modèles de langage statistiques et la génération de langage hiérarchique

सांख्यिकीय भाषा मॉडल और पदानुक्रमित भाषा निर्माण को समझना

統計言語モデルと階層的言語生成の理解

통계적 언어 모델 및 계층적 언어 생성 이해

Compreendendo modelos estatísticos de linguagem e geração hierárquica de linguagem

Понимание статистических языковых моделей и генерации иерархического языка

Stories, News & Mentions about PHYLLO

Phyllo’s Stories on HackerNoon