The Canadian Naturalist and Geologist, Volumen6Dawson., 1861 |
Dentro del libro
Resultados 1-5 de 66
Página 7
... periods of ten years , and which in its case depend on the Hare its princi- pal food . One of the most curious of the idiosyncrasies of this animal is its passion for perfumes ; and particularly for the odor of castoreum , which forms ...
... periods of ten years , and which in its case depend on the Hare its princi- pal food . One of the most curious of the idiosyncrasies of this animal is its passion for perfumes ; and particularly for the odor of castoreum , which forms ...
Página 17
... period . I have remarked this trait even in cubs , which I have reared in confinement , and which used , previous to eating , to dig holes in the snow to bury their food , pushing the snow with their noses to cover it . During the ...
... period . I have remarked this trait even in cubs , which I have reared in confinement , and which used , previous to eating , to dig holes in the snow to bury their food , pushing the snow with their noses to cover it . During the ...
Página 35
... period of the year its migrations on land are toilsome and it leaves a deep furrow or path in the snow , which when seen by the trapper soon after the animal has passed , invariably leads to the distruction of the animal . If a trap be ...
... period of the year its migrations on land are toilsome and it leaves a deep furrow or path in the snow , which when seen by the trapper soon after the animal has passed , invariably leads to the distruction of the animal . If a trap be ...
Página 48
... period at this high level . " Another ancient beach mark about 15 miles inland , and as far as yet ascertained , about the same level as the one at Penetanguishene , can be traced for a long distance in the township Tosorontio . It ...
... period at this high level . " Another ancient beach mark about 15 miles inland , and as far as yet ascertained , about the same level as the one at Penetanguishene , can be traced for a long distance in the township Tosorontio . It ...
Página 73
... period having been common to the two sides of the Atlantic . The re- lative number of identical species has , however , it seems to me , been somewhat overrated . In many of the species , regarded as the same in Europe and America , the ...
... period having been common to the two sides of the Atlantic . The re- lative number of identical species has , however , it seems to me , been somewhat overrated . In many of the species , regarded as the same in Europe and America , the ...
Otras ediciones - Ver todas
Términos y frases comunes
Abundant America animal appear Barrande beds birds brown Calciferous Canada Canadensis Canadian Naturalist Carboniferous character coal coast colour common containing crystalline deposits Devonian district eggs elevation Fabr feet formation Fort Simpson fossils Gaspé genera genus Geological Survey geologists gneiss gold graptolites grey hairs Hamilton's Farm Hudson River Huron inches Incisors Indian Island Lake Huron Lake Superior Laurentian limestone lines Linn Logan Lower Canada Lower Silurian mineral molars Montcalm Montreal mountains Natural History Society nearly observed occur Olenus petroleum places plants Point Levi Potsdam present probably Prof quartz Quebec Quebec group region remarkable rocks rocky Rouge round sand sandrock sandstone second fauna sediments seen shales shells shore side Sir William Logan slates species specimens strata surface Taconic tail thick tion trilobites upper V.S.P. Length valley warblers woods
Pasajes populares
Página 392 - Just previous to this time, in the Report of the Regents of the University of New York, for 1859, Professor Hall had described and figured by the name of Olenus two species of trilobites from the slates of Georgia, Vermont, which Emmons had wrongly referred to the genus Paradoxides. They were at once recognized by Barrande, who called attention to their primordial character, and thus...
Página 97 - ... like those of the Appalachian range. In truth, Mr. Hall observes, the carboniferous limestone is one of the most extensive marine formations of the continent, and is characterized over a much greater area by its marine fauna than by its terrestrial vegetation. " The accumulations of the coal period were the last that gave form and contour to the eastern side of our continent, from the Gulf of St. Lawrence to the Gulf of Mexico ; and as we have shown that the great sedimentary deposits of successive...
Página 199 - ... to furnish important collateral evidence in support of the reasoning founded on other sciences, such as philology and ethnology, which has long demanded, for the development of our race, a number of years far exceeding that which is allowed by the chronology previously received. It is the beautiful expression of Sir Thomas Browne, which I find quoted by Dr Mantell in a former paper on this subject, that " Time conferreth a dignity upon the most trifling thing that resisteth his power...
Página 242 - ... animals ; the latter is not surprising when we consider that a considerable portion of the tissues of the lower marine animals is destitute of nitrogen, and very similar in chemical composition to the woody fibre of plants.
Página 92 - Hall, shown to be the natural base of the Silurian rocks in America, as Barrande and De Verneuil have proved it to be on the continent...
Página 334 - as many as two hundred of these concretions, varying in size from that of a small pea to that of a hazel-nut, to be passed after the administration of a single dose of Podophyllin and the Oil.
Página 95 - Quebec group is of considerable economic interest inasmuch as it is the great metalliferous formation of North America. To it belongs the gold which is found along the Appalachian chain from Canada to Georgia, together with lead, zinc, copper,, silver, cobalt, nickel, chrome and titanium. I have long since called attention to the constant association of the latter metals, particularly chrome and nickel, with the ophiolites and magnesian rocks of this series, while they are wanting in similar rocks...
Página 406 - zone primordiale" of Bohemia — having no representative in the north-western Highlands, there is necessarily a complete unconformity between the fossil-bearing crystalline limestone and quartz-rocks with the Maclurea, Murchisonia, Orphile'ta, Orthis, Orthoceratites, etc., and those Cambrian rocks on which they rest. A great revolution in the ideas of many an old geologist, including myself, has thus been effected. Strengthened and confirmed as my view has been by the concordant testimony of Ramsay,...
Página 104 - bottom strata to establish lines of weakness or of least resistance in the earth's crust, and thus determine the contraction which results from the cooling of the globe to exhibit itself in those regions, and along those lines where the ocean's bed is subsiding beneath the accumulated sediments...
Página 329 - Ocean, and divided into two slopes by a watershed that nearly follows the political boundaryline, and throws the drainage to the Gulf of Mexico and the Arctic Ocean. The northern part of this plateau has a slope, from the Rocky Mountains to the eastern or Laurentian axis, of six feet in the mile, but is broken by steppes, which exhibit lines of ancient denudation at three different levels ; the lowest is of freshwater origin ; the next belongs to the Driftdeposits, and the highest is the great Prairie-level...