On the Law Which Has Regulated the Introduction of New Species

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Author: Alfred Russel Wallace  | Date: 1855

Conclusion.

It has now been shown, though most briefly and imperfectly, how the law that "Every species has come into existence coincident both in time and space with a pre-existing closely allied species," connects together and renders intelligible a vast number of independent and hitherto unexplained facts. The natural system of arrangement of organic beings, their geographical distribution, their geological sequence, the phaenomena of representative and substituted groups in all their modifications, and the most singular peculiarities of anatomical structure, are all explained and illustrated by it, in perfect accordance with the vast mass of facts which the researches of modern naturalists have brought together, and, it is believed, not materially opposed to any of them. It also claims a superiority over previous hypotheses, on the ground that it not merely explains, but necessitates what exists. Granted the law, and many of the most important facts in Nature could not have been otherwise, but are almost as necessary deductions from it, as are the elliptic orbits of the planets from the law of gravitation.

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Chicago: Alfred Russel Wallace, "Conclusion.," On the Law Which Has Regulated the Introduction of New Species Original Sources, accessed October 3, 2022, http://www.originalsources.com/Document.aspx?DocID=L8EGBSSSB6E7HQZ.

MLA: Wallace, Alfred Russel. "Conclusion." On the Law Which Has Regulated the Introduction of New Species, Original Sources. 3 Oct. 2022. http://www.originalsources.com/Document.aspx?DocID=L8EGBSSSB6E7HQZ.

Harvard: Wallace, AR, 'Conclusion.' in On the Law Which Has Regulated the Introduction of New Species. Original Sources, retrieved 3 October 2022, from http://www.originalsources.com/Document.aspx?DocID=L8EGBSSSB6E7HQZ.