id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
38584	Wollaston, Thomas Vernon	On the Variation of Species, with Especial Reference to the Insecta Followed by an Inquiry into the Nature of Genera			.txt	text/plain	54237	2204	57	on Insect variation (with reference to external disturbing causes) to remark the variation to which certain insects are at times liable certain species, is not remarkable; but that every individual insect insect-aberration generally, whether regarded as a _universal fact_ appear to produce any very decided modifying effect on insect form, and which has been naturalized even in the Madeira Islands, passes insects is liable to be controlled by the physical state of the areas common in the other species of the generic group[26]." isolation over insect form is perhaps more especially to be detected influence of isolation and other circumstances on external insect There are many insects which appear to have _two distinct states_, case in the northern and southern ones), whilst in Madeira proper it the local nature of its various species, 152, 153. States, large and small ones indicated in some insects, 105.	./cache/38584.txt	./txt/38584.txt