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" Some of these coincident variations have been alluded to in various parts of this work, but they have never been systematically investigated. They constitute an unworked mine of wealth for the enterprising ' explorer ; and they may not improbably lead... "
The Geographical Distribution of Animals: With a Study of the Relations of ... - Page 537
by Alfred Russel Wallace - 1876 - 503 lehte
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Report of the Annual Meeting

British Association for the Advancement of Science - 1877 - 826 lehte
...field still unexplored in Natural History." These coincident variations, he concludes by saying, " have never been systematically investigated. They...for many of the external characteristics of animals " (vol. ii. pp. 652, 5-33). And now to follow out the idea with which I began. Having touched on the...
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Bibliotheca Sacra and Theological Review, 34. köide

1877 - 820 lehte
...as he has entered upon in the volumes under review "may not improbably lead to the discovery of some hidden laws (supplementary to natural selection) which...for many of the external characteristics of animals" (Vol. ii. pp. 553). The doctrine of the derivative origin of species is now used as a new " calculus...
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Foundations of Biogeography: Classic Papers with Commentaries, 5–8. osa

Mark V. Lomolino, Dov F. Sax, James H. Brown - 2004 - 1284 lehte
...geographical influences. Some of these coincident variations have been alluded to in various parti of this work, but they have never been systematically...account for many of the external characteristics of auimals. In concluding his task, the author venture! to suggest, that naturalists who are disposed...
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