The Canadian Naturalist and Geologist, Volume 7Dawson., 1862 - Geology |
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1st primary longest 2nd primary longest alar breadth alar expanse Arctic auriculars Baird barred beds Bill black blackish brown bluish breast brownish black Canada Cape Ray cent char cheeks chesnut Chin cinereous clove clove brown colour copper coverts black Crown of head dark Dorsal aspect dusky edged eggs female ferruginous flanks formation Fort Simpson fossils Genus geological gneiss green Greenland grey greyish hornblende inches inner vanes insect interscapulary region irides hazel lateral tail legs and feet length of bill limestone long scapulars lower mandible margined middle toe Migr Montreal nape of neck Newfoundland nuchal outer vanes pale plants Protichnites pyrites reddish rocks rump sandstone scapulars schist secondaries shafts shale sides Silurian slate small wing coverts species specimens streak Sub gen subequal tail coverts tail coverts white tail feathers tarsus throat tint tipped with white trees upper mandible V.S.P. Bill Ventral aspect whitish yellow yellowish young bird
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Page 156 - By the same Author and Editors. MANUAL OF PROTOZOA; With a Ge-neral Introduction on the Principles of Zoology, and 16 Woodcuts : Being the First Manual of the Series. Fcp.
Page 245 - ... ones. That lenticular envelope which surrounds the sun, and which is known to astronomers as the Zodiacal light, is probably a crowd of meteors ; and moving as they do in a resisting medium, they must continually approach the sun. Falling into it, they would be competent to produce the heat observed, and this would constitute a source from which the annual loss of heat would be made good. The sun, according to this hypothesis, would be continually growing larger ; but how much larger ? Were our...
Page 240 - ... second. That is to say, if at that instant the earth were annihilated, and its attraction annulled, the weight would proceed through space at the uniform velocity of 32 feet a second. Suppose that instead of being pulled downward by gravity, the weight is cast upward in opposition to the force of gravity, with what velocity must it start from the earth's surface in order to reach a height of 16 feet ? With a velocity of 32 feet a second.
Page 248 - Motion,' and applied the mechanical Theory of Heat in the most fearless and precise manner to vital processes. He also embraced the other natural agents in his chain of conservation. In 1853 Mr. Waterston proposed, independently, the Meteoric Theory of the sun's heat, and in 1854 Professor William Thomson applied his admirable mathematical powers to the development of the theory ; but six years previously the subject had been handled in a masterly manner by Mayer, and all that I have said on this...
Page 242 - ... now regard the act of combination on the part of the atoms of oxygen and coal exactly as we regard the clashing of a falling weight against the earth. And the heat produced in both cases is referable to a common cause. This glowing diamond, which burns in oxygen as a star of white light, glows and burns in consequence of the falling of the atoms of oxygen against it. And could we measure the velocity of the atoms when they clash, and could we find their number and weight, multiplying the mass...
Page 247 - ... carbonic acid gas — which is formed by the falling together of carbon and oxygen. These atoms thus in close union resemble our lead weight while resting on the earth ; but I can wind up the weight and prepare it for another fall, and so these atoms can be wound up, separated from each other, and thus enabled to repeat the process of combination. In the building of plants carbonic acid is the material from which the carbon of the plant is derived : and the solar beam is the agent which tears...
Page 248 - Heat" in 1843; but in 1842 Mayer had actually calculated the mechanical equivalent of heat from data which a man of rare originality alone could turn to account. From the velocity of sound in air, Mayer determined the mechanical equivalent of heat. In 1845 he published his Memoir on " Organic Motion," and applied the mechanical theory of heat in the most fearless and precise manner to vital processes.
Page 248 - When we consider the circumstances of Mayer's life, and the period at which he wrote, we cannot fail to be struck with astonishment at what he has accomplished. Here was a man of genius working in silence, animated solely by a love of his subject, and arriving at the most important results, some time in advance of those whose lives were entirely devoted to natural philosophy.
Page 261 - ... by molecular changes, and by chemical reactions. Following upon this, Daubree observed that the thermal alkaline spring of Plombieres, with a temperature of 160° F., had in the course of centuries, given rise to the formation of zeolites, and other crystalline silicated minerals, among the bricks and cement of the old Roman baths. From this he was led to suppose that the metamorphism of great regions...
Page 249 - He noticed that the venous blood in the tropics was of a much brighter red than in colder latitudes ; and his reasoning on this fact led him into the laboratory of natural forces, where he has worked with such signal ability and success. Well, you will desire to know what has become of this man. His mind gave way ; he became insane, and he was sent to a lunatic asylum. In a biographical dictionary of his country it is stated that he died there : but this is incorrect. He recovered, and, I believe,...