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acid already American animals appear base become beds Bell branches called Canada Canadian carbonate character collection College common considerable contains course crystals deposited described eggs example existence experiments fact Falls feet feldspar fern fish formation fossils four geological give given Gray half important inches interest Island John known Lake land less lime limestone Linn lower manure mass matter means Michx miles mineral Montreal Mountains Natural History nature nearly noticed objects observed obtained occur organic passed period phonolite plants portion present probably Professor Quebec Rain referred regarded region remains remarkable Report river rocks seen side similar Society soil sometimes species specimens stream success supply supposed surface taken tion variety various whole woods
Page 107 - Waterloo, and of the Crimea; already from the catacombs of Sicily she has carried away the skeletons of many successive generations.
Page 394 - This increase of bulk, he says, must sometimes give rise to a mechanical force of expansion capable of uplifting the incumbent crust of the earth ; and the same force may act laterally so as to compress, dislocate, and tilt the strata on each side of a mass in which the new chemical changes are developed. The calculations made by this eminent German chemist of the exact amount of...
Page 103 - ... soil does not appear to be a matter of indifference. For the more finely the bones are reduced to powder, and the more intimately they are mixed with the soil, the more easily they are assimilated.
Page 23 - ... at one end of the chain erupted lavas, indicating as perfect and complete fusion as the slags of furnaces, and at the other end simple quartz veins, having a structure precisely analogous to that of crystals deposited from, water. Between these there is every connecting link, and the central link is granite.
Page 144 - Seldom hatch at all, possibly from having been destroyed by the low temperature. 3. The eggs deposited by the female will not hatch under any circumstances unless vivified, after exclusion, by the milt of the male ; and — at least up to the period of migration — there is no difference whatever in fry bred between Salmon only, between Grilse only, between Salmon and Grilse, between Salmon and Parr, or between Grilse and Parr. [Note, — The female Parr cannot spawn ; but the male Parr possesses,...
Page 394 - But there are other characters in the structure of the earth's crust more mysterious in their nature than the phenomena of metalliferous veins, on which the study of hot springs has thrown light. I allude to the metamorphism of sedimentary rocks. Strata of various ages, many of them once full of organic remains, have been rendered partially or wholly crystalline. It is admitted on all hands that heat has been instrumental in bringing about this rearrangement of particles, which, when the metamorphi^m...
Page 400 - If such changes cm be experienced in less than a century, without any perceptible modification in the physical geography of that part of Asia, what mighty effects may we not imagine the submergence of the Sahara to have produced in adding to the size of the Alpine glaciers? If between the years 1812 and 1820, a mere diminution of the number of days during which the sirocco blew could so much promote the growth and onward movement of the ice, how much greater a change would result from the total cessation...
Page 224 - ... stratified clays and sands containing sea-shells; and whatever views may be entertained as to other boulders, it cannot be denied that these have been borne by floating ice. Nor is it true, as has been often affirmed, that the boulder clay is destitute of marine fossils. At Isle Verte, Riviere du Loup, Murray Bay, and St Nicholas on the St Lawrence, and also at Cape Elizabeth, near Portland, there are tough stony clays of the nature of true " till," and in the lower part of the drift, which contain...
Page 145 - ... 4. The fry remain one, two, and, in some cases, three years in the rivers as parr before going down to the sea — about half taking their departure at one year, nearly all the others at two years, and the remainder (which are exceptional) at three years old. 5. All young salmon fry are marked with bluish bars on their sides until shortly before their migration, up to which period they are parrs ; they then invariably assume a more or less complete coating of silvery scales and become smolts...
Page 223 - ... passing into a colder portion of space, or the amount of solar heat being diminished. But the former supposition has no warrant from geology, and astronomy affords no evidence for the latter view, which, besides, would imply a diminution of evaporation militating as much against the glacier theory as would an excess of heat. An attempt has recently been made by Professor Frankland to account for such a state of things by the supposition of a higher temperature of the sea, along with a colder...