The Canadian Naturalist and Quarterly Journal of ScienceDawson Bros., 1872 |
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Стр. 236
... Sedgwick took part , and in 1835 and 1839 , two journeys were performed by Sedgwick and Mur- chison to the Rhenish Provinces ; on the latter occasion M. de Verneuil also accompanied them . The result of these researches , † This paper ...
... Sedgwick took part , and in 1835 and 1839 , two journeys were performed by Sedgwick and Mur- chison to the Rhenish Provinces ; on the latter occasion M. de Verneuil also accompanied them . The result of these researches , † This paper ...
Стр. 281
... Sedgwick made a careful section of the rocks of North Wales from the Menai Strait across the range of Snowdon to the Berwyn hills , thus traversing in a south - eastern direction Caernarvon , Denbigh and Merionethshire . Already , he ...
... Sedgwick made a careful section of the rocks of North Wales from the Menai Strait across the range of Snowdon to the Berwyn hills , thus traversing in a south - eastern direction Caernarvon , Denbigh and Merionethshire . Already , he ...
Стр. 282
... Sedgwick on this occasion appears in the Proceedings of the Association . He did not at this time give any distinctive name to the series of rocks in question . [ L E. & D. Philos . Mag . [ 1854 ] IV , viii , 495. ] Meanwhile , in the ...
... Sedgwick on this occasion appears in the Proceedings of the Association . He did not at this time give any distinctive name to the series of rocks in question . [ L E. & D. Philos . Mag . [ 1854 ] IV , viii , 495. ] Meanwhile , in the ...
Стр. 283
... Sedgwick had long been engaged in the study of these rocks , Murchison , as he tells us , urged him to give them a British geo- graphical name . Sedgwick accordingly proposed for this great series of Welsh rocks , the appropriate ...
... Sedgwick had long been engaged in the study of these rocks , Murchison , as he tells us , urged him to give them a British geo- graphical name . Sedgwick accordingly proposed for this great series of Welsh rocks , the appropriate ...
Стр. 284
... Sedgwick describes further the section from the Menai Strait to the Berwyns , and assigns to the chloritic and micaceous schists of Anglesea and Caernarvon a position inferior to the Cambrian , which he divides into two parts ; viz ...
... Sedgwick describes further the section from the Menai Strait to the Berwyns , and assigns to the chloritic and micaceous schists of Anglesea and Caernarvon a position inferior to the Cambrian , which he divides into two parts ; viz ...
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appear Arctic Bala Barrande basin beds Bohemia Boulder-clay boulders brachiopods Brunswick Canada Caradoc coal coast colonies colour contains crystalline crystals deposits dorsal drift Etage feet formation Fossil-Montreal fossiliferous fossils Gaspé genus Geol glacial glaciers granite graptolites gravel Gulf of St Gulf St hills hornblende iron Island Labrador Lake land Laurentian Lawrence Leda clay limestone Lingula-flags Llandeilo Lower Silurian marine mass mica minerals Montreal Mountain Murchison Murray Bay nearly North Nova Scotia observed occur Olenus orthoclase paleozoic Pliocene porphyritic portion Post-pliocene present primordial Prof quartz Quebec recent referred regard region remarkable ridges River Rivière-du-Loup rocks sandstone Saxicava sand schists second fauna Sedgwick seen shales shells shore side Silurian system slates slope species specimens stones strata stratified striæ striation surface terrace thickness third fauna tion trachyte trilobites Upper Cambrian Upper Silurian valley ventral valve whale Whiteaves
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Стр. 143 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Стр. 151 - But expectation is permissible where belief is not; and if it were given me to look beyond the abyss of geologically recorded time to the still more remote period when the earth was passing through physical and chemical conditions, which it can no more see again than a man may recall his infancy, I should expect to be a witness of the evolution of living protoplasm from not living matter.
Стр. 151 - Abiogenesis ever has taken place in the past or ever will take place in the future. With organic chemistry, molecular physics, and physiology yet in their infancy, and every day making prodigious strides, I think it would be the height of presumption for any man to say that the conditions under which matter assumes the properties we call " vital " may not, some day, be artificially brought together.
Стр. 143 - It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us.
Стр. 141 - organic cells," or "protoplasm." But science brings a vast mass of inductive evidence against this hypothesis of spontaneous generation, as you have heard from my predecessor in the Presidential chair. Careful enough scrutiny has, in every case up to the present day, discovered life as antecedent to life. Dead matter cannot become living without coming under the influence of matter previously alive. This seems to me as sure a teaching of science as the law of gravitation.
Стр. 429 - Logan attempted a new explanation of the stratigraphy of the region; declaring at the same time that, "from the physical structure alone, no person would suspect the break which must exist in the neighborhood of Quebec ; and without the evidence of the fossils every one would be authorized to deny it." (Ibid., page 218.) The typical Potsdam sandstone of the New York system, as seen in the Ottawa basin in northern New York and the adjacent parts of Canada, affords but a very meagre fauna, including...
Стр. 429 - River group, or forming part of a series of strata which he is inclined to rank as a distinct group above the Hudson River proper. -It would be quite superfluous for me to add one word in support of the opinion of the most able stratigraphical geologist of the American continent" Paleontology and stratigraphy here came into conflict, and it was not till in 1860, when Mr.
Стр. 133 - ... with which a star approaches to or recedes from the earth. The principle is, first to identify, if possible, one or more of the lines in the spectrum of the star, with a line or lines in the spectrum of sodium, or some other terrestrial substance, and then (by observing the star and the artificial light simultaneously by the same spectroscope) to find the difference, if any, between their refrangibilities. From this difference of refrangibility the ratio of the periods of the two lights is calculated,...
Стр. 128 - The discovery by Fraunhofer of a coincidence between his double dark line D of the solar spectrum and a double bright line which he observed in the spectra of ordinary artificial flames. (2) A very rigorous experimental test of this coincidence by Prof.