On the origin of species

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ID: 307970
1860
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Abstract
IT has frequently occurred in the history of science that some startling theory, which, when first announced, was regarded as the antagonist of received opinions, and became at once the subject of earnest hostility as well as unqualified approbation, has, after much discussion been importantly qualified and modified, and thus reconciled with views which it seemed to contradict; and when thus shorn of its excess and moderated in its demands, has been generally adopted as an important addition to knowledge.It may yet be so with Mr. Darwin's views.His theory, stated very briefly, is, that all organisms tend to reproduce themselves in a geometrical ratio, and with such exuberance of life, that each one would speedily fill the earth, if not repressed by constant and powerful causes of destruction.Hence but a very small proportion bf seeds or ova which are impregnated are able to mature and reproduce.Therefore there must be a competition, or as he phrases it, a "struggle for life," among all these impregnated germs of life; and if one in a hundred only lives there must be a reason why that one lives rather than the ninety and nine which perish.This reason must again be frequently, or at least sometimes, that it had some advantage in this "struggle for life," by a structural or functional difference.That is, it varied from its kindred, in such wise, that it was somewhat easier for it to live, to grow, to mature, and to reproduce, than for them.This difference or variation it must, as a general rule, impart to its offspring.When it be-
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openalex_W4232212146 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tom Parsons
Journal american journal of science
Year 1860
DOI
10.2475/ajs.s2-30.88.1
URL
https://ajsonline.org/article/64574.pdf
Keywords Keywords not found

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