id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iguana-17710	Stejneger, Leonhard	Notes on Butler’s Garter Snake	2007	1	.pdf	application/pdf	787	47	66	This statement alone should have prevented it from ever becoming associated with Thamnophis sirtalis as a subspecies until additional material should establish the incorrectness of Prof. Cope’s standpoint, who, having himself endeavored to subordinate the various binomials under other forms as trinomials, would have been able to discover the rela- tionship with T. sirtalis, if such relationship existed. The result is that there is a great diversity of opinion among authors as to the number of species and the proper limitations of the forms, and while one is inclined to recognize a long series of species, another will only allow a very limited number indeed, though admitting numer- ous “varieties,” at least of some of the species.	cache/iguana-17710.pdf	txt/iguana-17710.txt