Filtrer
Nature And Human Studies
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What are Species? In its most general acceptation the word "species" signifies a kind or sort of something, which something is the genus to which the species belongs. Thus, a black stone is a species of the genus stone; a gray horse is a species of the genus horse; a scalene triangle is a species of the genus triangle; and, generally, it may be said that every adjective denotes a species of the genus indicated by the substantive to which it is applied. In the technology of the physical sciences the term "species" has a more restricted signification. It is used to denote a group of individuals which corresponds with an early stage of that process of abstraction by which the qualities of individual objects are arranged in the subordinated categories of classification. The individual object alone exists in Nature; but, when individual objects are compared, it is found that many agree in all those characters which, for the particular purpose of the classifier, are regarded as important, while they differ only in those which are unimportant; and those which thus agree constitute a species, the definition of which is a statement of the common characters of the individuals which compose the species...
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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... -
Cyclones, Tornadoes and Storms
Nature And Human Studies
- Human and Literature Publishing
- 9 Février 2022
- 9782491962999
The science of meteorology has revealed to us the true nature of atmospheric disturbances throughout time and space. We know their producing causes, and can foretell, with a considerable degree of accuracy, their force, duration, and direction.
After dealing with the origin and movement of continental cyclones, we will naturally deal with tornadoes and storms. -
A History of Brazil
Collection, Nature And Human Studies
- Human and Literature Publishing
- 31 Mars 2022
- 9782384690121
This book deals with a history of Brazil.
The largest republic of South America, and the third largest of the western hemisphere, Brazil, which from a variety of circumstances, has ever been regarded an interesting country, is now become doubly so, from being the present residence of the court of Portugal; and as such, we are induced to give a description of it, which, from the nature and size of this work, must necessarily be a short one. Cabral, in the year 1500, first landed on the coast of Brazil, and immediately gave notice to the court of Lisbon of the discovery he had made. The Portugueze, however, were for a length of time very indifferent to the acquisition of so fine a country. This negligence may in a great degree be attributed to the want of civilized inhabitants, and opulent towns, which the Portugueze had been accustomed to meet with in Africa and Asia; whilst the natives of Brazil consisted of different colonies of savages, dwelling in miserable huts, situated either in forests, on the banks of rivers, or on the sea-coast; and subsisting entirely on the produce of the chace, or on fish caught by themselves. The heat of the climate made cloathing not only unnecessary, but absolutely superfluous. The men and women equally painted their bodies, ornamented their necks and arms with necklaces and bracelets of white bones, and adorned their heads with feathers. The Brazilians are nearly of the same stature as the Europeans, but in general not so robust. Their principal arms consisted of clubs and arrows; their wars were not frequent, but cruel; and dreadful was the fate of those prisoners who fell into their hands without being wounded, since they constantly served as a repast to their merciless conquerors... -
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. -
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... -
Intelligence of Elephants
Collection, Nature And Human Studies
- Human and Literature Publishing
- 25 Avril 2022
- 9782384690596
This book deals with the intelligence of the elephants, their emotions and memory.
The higher mental faculties of the elephant are more advanced in their development than in any other animal, except the dog and monkey...
"The elephant is the largest living land animal. Though numerous forms existed in early geological times, it is represented today by two species only: the African elephant, and the Asiatic elephant.
The African elephant differs from its Asiatic cousin in several particulars. The apparent distinguishing features are the tusks that attain a much greater development and occur in both sexes, while in the Asiatic species the males alone possess them. The African elephant is at least a foot higher than the Asiatic, attaining a maximum height of eleven feet. Its ears are extremely large, covering the shoulder, and in some instances measuring three and a half feet in length by two and a half feet in width, while those of its Indian relative are comparatively small."...