Wallace_Sarawak_Law_paper

Wallace_Sarawak_Law_paper - 1 855 ON THE L AW WHICH HAS R...

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1855 O N THE L AW WHICH HAS R EGULATED THE I NTRODUCTION OF N EW S PECIES BY ALFRED RUSSEL WALLACE FEBRUARY, 1855 (ALSO KNOWN AS THE SARAWACK LAW. ED.) Wallace, A. R. 1855. On the law which has regulated the introduction of new species. Annals and Magazine of Natural History , 2 nd Series, 16:184–196.
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© 1998, Electronic Scholarly Publishing Project http://www.esp.org This electronic edition is made freely available for scholarly or educational purposes, provided that this copyright notice is included. The manuscript may not be reprinted or redistributed for commercial purposes without permission.
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© 1998, Electronic Scholarly Publishing Project http://www.esp.org This electronic edition is made freely available for scholarly or educational purposes, provided that this copyright notice is included. The manuscript may not be reprinted or redistributed for commercial purposes without permission. Wallace, A. R. 1855. On the law which has regulated the introduction of new species. Annals and Magazine of Natural History , 2nd Series, 16:184–196. 1855 O N THE L AW WHICH HAS R EGULATED THE I NTRODUCTION OF N EW S PECIES BY ALFRED RUSSEL WALLACE FEBRUARY, 1855 (ALSO KNOWN AS THE SARAWACK LAW. ED.) Geographical Distribution dependent on Geologic Changes. EVERY NATURALIST who has directed his attention to the subject of the geographical distribution of animals and plants, must have been interested in the singular facts which it presents. Many of these facts are quite different from what would have been anticipated, and have hitherto been considered as highly curious, but quite inexplicable. None of the explanations attempted from the time of Linnaeus are now considered at all satisfactory; none of them have given a cause sufficient to account for the facts known at the time, or comprehensive enough to include all the new facts which have since been, and are daily being added. Of late years, however, a great light has been thrown upon the subject by geological investigations, which have shown that the present state of the earth and of the organisms now inhabiting it, is but the last stage of a long and uninterrupted series of changes which it has undergone, and consequently, that to endeavour to explain and account for its present condition without any
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2 Wallace, A. R. (1855) FOUNDATIONS OF CLASSICAL GENETICS reference to those changes (as has frequently been done) must lead to very imperfect and erroneous conclusions. The facts proved by geology are briefly these: — That during an immense, but unknown period, the surface of the earth has undergone successive changes; land has sunk beneath the ocean, while fresh land has risen up from it; mountain chains have been elevated; islands have been formed into continents, and continents submerged till they have become islands; and these changes have taken place, not once merely, but perhaps hundreds, perhaps thousands of times: — That all these operations have been more or less continuous, but unequal in their
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Wallace_Sarawak_Law_paper - 1 855 ON THE L AW WHICH HAS R...

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