The Canadian Naturalist and Geologist, Volume 3

Front Cover
Dawson., 1858 - Geology

From inside the book


Other editions - View all

Common terms and phrases

Popular passages

Page 255 - We unite under the designation of a species all those individuals that mutually bear to each other so close a resemblance as to allow of our supposing that they may have proceeded originally from a single being or a single pair.
Page 375 - The end of our foundation is the knowledge of causes, and secret motions of things; and the enlarging of the bounds of human empire, to the effecting of all things possible.
Page 374 - The atmosphere was healthily influenced by its horizontal currents ; and by ever-varying clouds and vapours, rising, condensing, dissolving, and falling in endless vertical circulation. With these conditions of life, we know that life itself has been enjoyed throughout the same countless thousands of years ; and that with life, from the beginning, there has been death.
Page 54 - Their posterior development is so marked that anatomists have assigned to that part the character of a third lobe. It is peculiar to the genus Homo, and equally peculiar is the 'posterior horn of the lateral ventricle,' and the 'hippocampus minor,' which characterize the hind lobe of each hemisphere.
Page 281 - Professor of the Literature of the Arts of Design" in the educational institution termed the University of New York; but he never delivered a single lecture.
Page 200 - This will give rise to evolutions of gases and vapours, earthquakes, volcanic explosions etc., all of which results must, according to known laws, follow from the fact of a high central temperature ; while from the mechanical subversion of the equilibrium of pressure, following upon the transfer of sediments, while the yielding surface reposes upon a mass of matter partly liquid and partly solid, we may explain the phenomena of elevation and subsidence. Such is a summary of the views put forward...
Page 388 - Megatherium and Megalonyx in both South and North America, and perished apparently with them, before the human period. Elephants are dependent chiefly upon trees for food. One species now finds conditions of existence in the rich forests of tropical Asia; and a second species in those of tropical Africa. Why, we may ask, should not a third be living at the expense of the still more luxuriant vegetation watered by the Oronooko, the Essequibo, the Amazon, and the La Plata, in tropical America?
Page 387 - ... respective powers of locomotion. With regard to the class of Birds, one might have expected to find that those which were deprived of the power of flight, and were adapted to subsist on the vegetation of a warm or temperate latitude, would still be met with more or less associated together, and least distant from the original centre of dispersion, situated in such a latitude. This, however, is not only not the case with birds, but is not so with any other classes of animals.
Page 200 - XL p. 548), he maintains that with the accumulation of sediment the isothermal lines in the earth's crust must rise, so that strata buried deep enough will be crystallized and metamorphosed, and eventually be raised, with their included water, to the melting-point. This will, give rise to evolutions of gases and vapors, earthquakes...
Page 61 - Quadrumana, but applied flat to the ground; the leg bears vertically on the foot ; the heel is expanded beneath ; the toes are short, but with the innermost longer and much larger than the rest, forming a

Bibliographic information