id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
28897	Darwin, Charles	The Variation of Animals and Plants Under Domestication, Volume II (of 2)			.txt	text/plain	225132	14147	70	ANIMALS AND PLANTS--REVERSION IN CROSSED VARIETIES AND SPECIES--REVERSION INDIVIDUAL ANIMALS--STERILITY OF PLANTS FROM CHANGED CONDITIONS OF DIFFERENCE IN FERTILITY BETWEEN CROSSED SPECIES AND VARIETIES--CONCLUSIONS SELECTION--INFLUENCE OF DIFFERENT BREEDERS ON THE SAME SUB-VARIETY--PLANTS varieties have probably in some cases run wild, and their crossing alone when they crossed certain breeds, pigeons coloured like the wild _C. distinct evidence that the crossing of differently-coloured varieties well with the converse case of domesticated animals and cultivated plants When fowls, pigeons, or cattle of different colours are crossed, cases, in which the breed has not been crossed, but some ancient character species (and conversely with the white-flowered variety), when crossed crossing of the differently coloured varieties of the same species, is PLANTS--STERILITY OF CROSSED SPECIES DUE TO DIFFERENCES CONFINED TO THE In some few cases varieties tend to keep distinct, by breeding at different plants crossed species should have been rendered sterile by a different	./cache/28897.txt	./txt/28897.txt