id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
2009	Darwin, Charles	The Origin of Species by Means of Natural Selection Or, the Preservation of Favoured Races in the Struggle for Life, 6th Edition			.txt	text/plain	208990	6773	52	facts as these, if we suppose that each species of animal and plant, or the individuals of any one species or variety in a state of nature. animals and plants, and compare them with closely allied species, we Variability--Individual differences--Doubtful species--Wide ranging, Variability--Individual differences--Doubtful species--Wide ranging, fact that if any animal or plant in a state of nature be highly useful selection; and in this case the individual differences given by nature, natural selection cannot do, is to modify the structure of one species, SPECIES are crossed the case is reversed, for a plant's own pollen that as new species in the course of time are formed through natural the case in nature; species (A) being more nearly related to B, C, and Natural selection cannot possibly produce any modification in a species So with natural species, if we look to forms very distinct, for instance	./cache/2009.txt	./txt/2009.txt