The Journal of Science, and Annals of Astronomy, Biology, Geology, Industrial Arts, Manufactures, and Technology, Band 13

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James Samuelson, William Crookes
J. Churchill and Sons., 1876
 

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Seite 543 - Notes on Building Construction. Arranged to meet the requirements of the Syllabus of the Science and Art Department of the Committee of Council on Education, South Kensington.
Seite i - BY WILLIAM A. HAMMOND, MD, Professor of Diseases of the Mind and Nervous System In the...
Seite 553 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Seite 106 - It has often been vaguely asserted that plants are distinguished from animals bynot having the power of movement. It should rather be said that plants acquire and display this power only when it is of some advantage to them...
Seite 152 - ... leader of the herd. Dr. Hooker informs me that an elephant which he was riding in India became so deeply bogged that he remained stuck fast until the next day, when he was extricated by men with ropes. Under such circumstances elephants will seize with their trunks any object, dead or alive, to place under their knees, to prevent their sinking deeper in the mud; and the driver was dreadfully afraid lest the animal should have seized Dr. Hooker and crushed him to death. But the driver himself,...
Seite 300 - The manner in which they lie would lead to the persuasion that it was a place of their manufacture and not of their accidental deposit; and the numbers of them were so great that the man who carried on the brick-work told me that, before he was aware of their being objects of curiosity, he had emptied baskets full of them into the ruts of the adjoining road.
Seite 240 - Now the square of 12 is 144, and the square of 17 is 289. Twice 144 is 288. The light of these candles, therefore, is as 288 to 289. They therefore balance each other as nearly as possible. Similarly I can balance a gas-light against a candle. I have a small gas-burner here, which I place 28 inches off on one side, and you see it balances the candle 12 inches off. These experiments show how conveniently and accurately this instrument can be used as a photometer. By balancing a standard candle on...
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