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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: part of Darwin's book on the ' Descent of Man' (pp. 280-300, 2nd edit., 1894). There is no need to accept the hypothesis of sexual selection for our purpose, since the observations of several naturalists, including Dr. Hartman, Fritz Miiller, Dr. Scudder, Mr. Bates, and Mr. Marshall (Entom. xxix. 42), coincide to prove that the females of certain insects, notably the Cicadas, are actually brought together by the stridulations of the males. Of course it would be more conclusive if we could actually find these organs of hearing that must be present to the females; but the failure of anatomy in this direction is not sufficiently important to obliterate any just conclusions we have previously gained from the deductive point of view. With relation to the stridulating organs of insects a word may not he out of place. Among the Diptera, the Keduvidse, the Homoptera, the Orthoptera, with the Locustidae, and certain Coleoptera, possess this power of stridulating; and it is a noteworthy fact that these organs must have been exclusively modified to their present pitch of perfection by natural selection for the sole purpose of stridulation; (though in this last statement Mr. Arkle can use my own arguments with some effect against me). Mr. Arkle, no doubt, justly complainsof the senses of touch and hearing being confounded, but this hardly influences the subject from a general point of view. Sir John Lubbock points out that several supposititious, animal instincts and senses would imply no meaning to us at all, since their parallels are not experienced subjectively; but in our present state of knowledge it will be less awkward to employ the term hearing where sound is concerned. College, Winchester, Dec. 4th, 1890. DESCRIPTIVE NOTES ON TWO COCCID.E. By T. D. A. Cocker...
| ISBN-13 | 9780217798495 |
|---|---|
| ISBN-10 | 0217798497 |
| Weight | 1.32 Pounds |
| Dimensions | 9.00 x 6.00 x 0.91 In |
| List Price | $19.15 |
| Format | Paperback |
|---|---|
| Pages | 410 pages |
| Publisher | |
| Published On | 2009-08-01 |
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