id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
inhs-408	Forbes, S. A.	An Ornithological Cross-section of Illinois in Autumn	1907	36	.pdf	application/pdf	7327	282	68	The one table shows us how each kind of bird is related to the various crops; and the other, how each crop is related to the various kinds of birds. To substitute iron for cot- ton at this point is the object of the studies now in progress in Illinois on the local distribution, average numbers, and ecolog- ical preferences of the various species of Illinois birds.	cache/inhs-408.pdf	txt/inhs-408.txt