The book Charles Darwin was written by author Charles Frederick Holder Here you can read free online of Charles Darwin book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Charles Darwin a good or bad book?
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) He has written on the phosphorescence of fire-flies, and on the habits of the larva of one of them Lamphyris occi- dentalis. (Ibid. , pp. 29, 30. ) He discussed the food- habits of stercovorous beetles, with reference to the origination of a new habit and the power of adapta- tion to new conditions. (Ibid. , p. 490, note. ) At Port St. Julian, Patagonia, he found a species of Tabanus extremely common, and remarks : " We here have the puzzle that so frequently occurs in the case of mosquitoes ...on the blood of what do these insects commonly feed ? The guanaco is nearly the only warm-blooded quadruped, and is found in quite inconsiderable numbers compared with the multitude of flies. " He has discussed the question of hibernation of insects, and shown that it is governed by the usual climate of a district, and not by absolute temperature. (Ibid. , pp. 98, 99. ) He gave the first true explanation of the springing power of the Elaterida when laid on their backs, showing how much depended on the elasticity of the sternal spine.
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