Science, Volume 4

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American Association for the Advancement of Science, 1884
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Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science.

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Page 406 - The more thoroughly we comprehend that process of evolution by which things have come to be what they are, the more we are likely to feel that to deny the everlasting persistence of the spiritual element in Man is to rob the whole process of its meaning.
Page 404 - Cotterill.— APPLIED MECHANICS : an Elementary General Introduction to the Theory of Structures and Machines. By JAMES H. COTTERILL, FRS...
Page 406 - For my own part, therefore, I believe in the immortality of the soul, not in the sense in which I accept• the demonstrable truths of science, but as a supreme act of faith in the reasonableness of God's work.
Page 245 - His structural superiority consists solely in the complexity and size of the brain. A very important lesson is derived from these and kindred facts. The monkeys were anticipated in the greater fields of the world's activity by more powerful rivals. The ancestors of the ungulates held the fields and the swamps, and the Carnivora, driven by hunger, learned the arts and cruelties of the chase. The weaker ancestors of the quadrumana possessed neither speed nor weapons of...
Page 181 - ... all the energy which, according to the first law of Thermo-dynamics, is resident in the coal. On a sounder view of the matter, the efficiency of the steam-engine is found to be so high, that there is no great margin remaining for improvement. The higher initial temperature possible in the gas-engine opens out much wider possibilities, and many good judges look forward to a time when the steam-engine will have to give way to its younger rival.
Page 29 - In whatever direction a body moves on the surface of the earth, there is a force arising from the earth's rotation which deflects it to the right in the northern hemisphere, but to the left in the southern hemisphere.
Page 181 - For the second law so far contradicts the usual statement of the first, as to assert that equivalents of heat and work are not of equal value. While work can always be converted into heat, heat can only be converted into work under certain limitations. For every practical purpose the work is worth the most, and when we speak of equivalents, we use the word in the same sort of special sense as that in which chemists speak of equivalents of gold and iron. The second law teaches us that the real value...
Page 408 - Wales offers its medal and a money-prize for the best communication (provided it be of sufficient merit) containing the results of original research or observation, upon each of the following subjects.
Page 434 - Smart before this conference, but which system is now inoperative for want of an appropriation by congress, meets with our cordial approval. To enable these protective measures to be carried out, we recommend that congress...
Page 257 - ... clearly show that a fertile soil is one which has accumulated within it the residue of ages of previous vegetation, and that it becomes infertile as this residue is exhausted...

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