id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
2929	Huxley, Thomas Henry	The Origin of Species From 'The Westminster Review', April 1860			.txt	text/plain	14184	339	41	On the other hand, there can be no doubt that the individuals of many natural species are either absolutely infertile if crossed with individuals of other species, or, if they give rise to hybrid offspring, the hybrids so produced are infertile when paired together. But it is not as yet proved that a race ever exhibits, when crossed with another race of the same species, those phenomena of hybridization which are exhibited by many species when crossed with other species.	cache/2929.txt	txt/2929.txt
