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Human and Literature Publishing
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Few natural groups present so many remarkable illustrations of several of the most important general laws which appear to have determined the structure of animal bodies as that of the whales.
The term "whale" is commonly but vaguely applied to all the larger and middle-sized Cetacea, and, though such smaller species as the dolphins and porpoises are not usually spoken of as whales, they may to all intents and purposes of zological science be included in the term. Taken all together the Cetacea constitute a distinct and natural order of mammals, characterized by their aquatic mode of life and external fish-like form. The body is fusiform, passing anteriorly into the head without any distinct constriction or neck, and posteriorly tapering off gradually toward the extremity of the tail, which is provided with a pair of lateral pointed expansions of skin supported by dense fibrous tissue, called "flukes," forming together a horizontally placed, triangular propelling organ.ebook (ePub) 3.49 €This book deals with a natural history of Whales and Dolphins, aquatic mammals within the order of Cetacea.
The Whales form one of the most extraordinary groups of the Mammalia, for they are warm-blooded, air-breathers, and sucklers of their young, and are most strangely adapted for life in a watery element. Oddly enough the term "Fish" is still applied to them by the whalers, though they have nothing in common with these creatures save a certain similitude in shape. The vulgar notion of a Whale is an enormous creature with an extremely capacious mouth, but the fact is that many of the Cetacea are of relatively moderate dimensions, though doubtless, on the other hand, the magnitude of some is perfectly amazing. Thus, in size they are variable as a group, a range of from five or six feet (equal to the stature of man) to seventy or eighty feet giving sufficiently wide limits. With certain exceptions, notwithstanding length, an average-sized Whale by no means conveys to the eye the same idea of vastness, say for instance, as does an Elephant. The reason is that most Cetaceans are of a club shape, the compact cylindrical body and long narrow tapering tail reducing the idea of size...ebook (ePub) 3.99 €Seated on the dry hill-side here, by the belted blue Mediterranean, I have picked up from the ground a bit of blanched and moldering bone, well cleaned to my hand by the unconscious friendliness of the busy ants; and looking closely at it I recognize it at once, with a sympathetic sigh, for the solid welded tail-piece of some departed British tourist swallow. He came here like ourselves, no doubt, to escape the terrors of an English winter: but among these pine-clad Provençal summits some nameless calamity overtook him, from greedy kestrel or from native sportsman, and left him here, a sheer hulk, for the future contemplation of a wandering and lazy field-naturalist. Fit text, truly, for a sermon on the ancestry of birds; for this solid tail-bone of his tells more strangely than any other part of his whole anatomy the curious story of his evolution from some primitive lizard-like progenitor. Close by here, among the dry rosemary and large-leaved cistus by my side, a few weathered tips of naked basking limestone are peeping thirstily through the arid soil; and on one of these gray lichen-covered masses a motionless gray lizard sits sunning his limbs, in hue and spots just like the lichen itself, so that none but a sharp eye could detect his presence, or distinguish his little curling body from the jutting angles of the rock, to which it adapts itself with such marvelous accuracy.
ebook (ePub) 3.49 €Ozone and Atmospheric Electricity
George M. Beard, Richard A. Proctor
- Human and Literature Publishing
- 1 Avril 2022
- 9782384690152
The singular gas termed ozone has attracted a large amount of attention from chemists and meteorologists. The vague ideas which were formed as to its nature when as yet it had been but newly discovered, have given place gradually to more definite views; and though we cannot be said to have thoroughly mastered all the difficulties which this strange element presents, yet we know already much that is interesting and instructive. Let us briefly consider the history of ozone.
This book will also deal with the Relation of Atmospheric Electricity and Ozone to Health and Disease.ebook (ePub) 3.49 €The Antillean Volcanoes, and the Eruption of Mount Pelee
W. J. Mcgee, Thomas A. Jaggar Jr
- Human and Literature Publishing
- 4 Septembre 2021
- 9782491962463
In all ages volcanoes have played a prominent role in human thought The Vulcan of classic mythology was but the head of a family of earth-gods born of the polytechnic Mediterranean mind fertilized by the "burning mountains" of continents conjoined in the Levant; and in the still lower stages of human development represented by scores of surviving tribes, Fire-Earth deities head the primitive pantheons-indeed, the Vulcanean notion seems to run back to a pristine stage in which the forerunners of living races first stole Vulcan's torch, tamed capricious and ferocious fire even as other [to them] beasts were tamed, and thus took the initial step in that nature-conquest by which man rose above lower life. Certain it is that Vulcanean myths are most dominant in lower savagery, feebler albeit sharper-cut about the birth-time of writing, and decadent during the period of written history.
ebook (ePub) 3.49 €The Struggle for Existence
Nature And Human Studies
- Human and Literature Publishing
- 15 Novembre 2021
- 9782491962470
In the strict sense of the word "Nature," it denotes the sum of the phenomenal world, of that which has been, and is, and will be; and society, like art, is therefore a part of Nature. But it is convenient to distinguish those parts of Nature in which man plays the part of immediate cause, as something apart; and, therefore, society, like art, is usefully to be considered as distinct from Nature. It is the more desirable, and even necessary, to make this distinction, since society differs from Nature in having a definite moral object; whence it comes about that the course shaped by the ethical man-the member of society or citizen-necessarily runs counter to that which the non-ethical man-the primitive savage, or man as a mere member of the animal kingdom-tends to adopt. The latter fights out the struggle for existence to the bitter end, like any other animal; the former devotes his best energies to the object of setting limits to the struggle.
In the cycle of phenomena presented by the life of man, the animal, no more moral end is discernible than in that presented by the lives of the wolf and of the deer. However imperfect the relics of prehistoric men may be, the evidence which they afford clearly tends to the conclusion that, for thousands and thousands of years, before the orgin of the oldest known civilizations, men were savages of a very low type. They strove with their enemies and their competitors; they preyed upon things weaker or less cunning than themselves; they were born, multiplied without stint, and died, for thousands of generations, alongside the mammoth, the urus, the lion, and the hyena, whose lives were spent in the same way; and they were no more to be praised or blamed, on moral grounds, than their less erect and more hairy compatriots...ebook (ePub) 2.49 €The Intelligence of Monkeys
Clemence Royer & Al.
- Human and Literature Publishing
- 18 Novembre 2021
- 9782491962548
When we compare the mental faculties and social instincts of animals, even of monkeys, with those of the superior races of civilized men, the distance seems immeasurable, and to fill the gap impossible. But, if we take the lower races of mankind, the differences appear less marked, and even analogies arise. Many of the moral and mental faculties, in fact, which we observe among the quadrumana appear common to them with savage peoples on the one side, and with some of the higher mammalia on the other side, which have well-developed social instincts-with, for instance, dogs, horses, and elephants. The animals which man has domesticated are, as a rule, those which belong to social species, and live in the natural state in more or less numerous groups. And, among the monkeys, it is not the large ones, those which most resemble men in stature, that are most social and most susceptible of domestication, but the smaller ones, the tree-climbers...
ebook (ePub) 2.99 €Ethics and Evolution of Boxing
O'Reilly B. J.
- Human and Literature Publishing
- 25 Février 2022
- 9782381113319
Has Boxing a Real Value?
"Both among the Greeks and Romans," says an eminent authority, "the practice of pugilism was considered essential to the education of their youth, from its manifest utility in strengthening the body, dissipating all fear, and infusing a manly courage into the system."
The Greeks and Romans kept boxing in its proper relation to everyday life; not as a brutal exhibition of skill or strength, but as a healthy exercise to invigorate the body, expand the chest, strengthen and quicken the muscles, and render mind and body free, supple, strong, and confident...
How many will say that this is sound doctrine for a man or a community? It is of little importance, perhaps, whether or not a grown man can play cricket or row a boat; but it is of very great importance, no matter how cheap pistols or post-chaises may be, that, in case he were called on, for personal or patriotic duty, to swim or climb for a life, to fight for a child or a woman, to defend his country in the field, he should be ready with a strong body, a stout heart, and a trained hand and mind to raise him over difficulty and danger.ebook (ePub) 4.49 €The Social Life of Birds and Animals
Collection
- Human and Literature Publishing
- 17 Avril 2022
- 9782384690176
Several writers have given descriptions of proceedings of assemblies of birds of various species which they regarded as formal "trials in court." While this view of the nature of the transactions noticed cannot yet be accepted as established by competent observation, they are certainly of an interesting character, and reveal a peculiar phase of bird-life. Dr. Edmondson describes regular assemblies of crows of the hooded species,"crow-courts" they are called,which are held at certain intervals in the Shetland Isles. A particular hill or field suitable for the business is selected, but nothing is done till all are ready, and consequently the earlier comers have sometimes to wait for a day or two till the others arrive. When all have come, the court opens in a formal manner, and the presumed criminals are arraigned at the bar. A general croaking and clamor are raised by the assembly, and judgment is delivered, apparently, by the whole court. As soon as the sentence is given, the entire assemblage, "judges, barristers, ushers, audience and all, fall upon the two or three prisoners at the bar, and beat them till they kill them." As soon as the execution is over, the court breaks up, and all its members disperse quietly...
ebook (ePub) 3.49 €The history of dolphins is one of the most fascinating and instructive in the history of ideas in the western world. Indeed, it provides one of the most illuminating examples of what has probably occurred many times in human culture a virtually complete loss of knowledge, at least in most segments of the culture, of what was formerly well understood by generations of men.
Dolphins are mammals. They belong in the order Cetacea, suborder Odontoceti, family Delphinidae. Within the Delphinidae there are some twenty-two genera and about fifty-five species. The count includes the Killer Whale, the False Killer Whale, the White Whale, and the Pilot Whale, all of which are true dolphins. There are two subfamilies, the Delphinapterinae, consisting of the two genera Monodon monocerus, the Narwhal, and Delphinapterus leucas, the White Whale or Beluga. These two genera are distinguished by the fact that none of the neck vertebrae are fused, whereas in all remaining genera, embraced in the subfamily Delphininae, at least the first and second neck vertebrae are fused.
It was Aristotle in his History of Animals (521b) who first classified whales, porpoises, and dolphins as Cetacea, . Aristotle's account of the Cetacea was astonishingly accurately written, and quite evidently from firsthand knowledge of these animals...ebook (ePub) 3.99 €Intelligence of Birds
Collection, Nature And Human Studies
- Human and Literature Publishing
- 25 Avril 2022
- 9782384690572
When we observe the small heads and unmeaning eyes of birds, we do not expect to find any great amount of intellect among them. They are, however, moved by the same passions and feelings as larger animals, and occasionally exhibit thought and reasoning power. I suspect, indeed, could we understand their language, that we should find they can talk to each other, and express their meaning as well as others of the brute creation.
The following pages will deal with prominent features of their intelligence and psychology.ebook (ePub) 4.49 €Intelligence of Dogs and Cats
George J. Romanes
- Human and Literature Publishing
- 25 Avril 2022
- 9782384690589
This book deals with the intelligence of dogs and cats.
The emotional life of the dog is highly developed, more highly, indeed, than that of any other animal. His gregarious instincts, united with his high intelligence and constant companionship with man, give to this animal a psychological basis for the construction of emotional character, having a more massive as well as more complex consistency than that which is presented even in the case of the monkey, which, as we shall afterwards see, attains to a remarkably high level in this respect.
The cat is unquestionably a highly intelligent animal, though when contrasted with its great domestic rival, the dog, its intelligence, from being cast in quite a different mould, is very frequently underrated. Comparatively unsocial in temperament, wanderingly predaceous in habits, and lacking in the affectionate docility of the canine nature, this animal has never in any considerable degree been subject to those psychologically transforming influences whereby a prolonged and intimate association with man has, as we shall subsequently see, so profoundly modified the psychology of the dog.ebook (ePub) 4.99 €Why Do Birds Sing
Collection, Nature And Human Studies
- Human and Literature Publishing
- 25 Avril 2022
- 9782384690787
Why do birds sing? Has their music a meaning, or is it all a matter of blind impulse? Some bright morning in March, as you go out-of-doors, you are greeted by the notes of the first robin. Perched in a leafless tree, there he sits, facing the sun like a genuine fire-worshiper, and singing as though he would pour out his very soul. What is he thinking about? What spirit possesses him?...
Birds sing when they are happy, and cry out when they are frightened, just as children do. Only they have songs and cries of their own. You can always tell when the little song-birds are happy, for each one trills out his joyous notes as he sits on a branch of a tree, or the top of a hedge...ebook (ePub) 3.49 €Un article a été ajouté à votre panier.