id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
inhs-305	Thompson, David	Some Observations on the Oxygen Requirements of Fishes in the Illinois River	1925	18	.pdf	application/pdf	4001	174	72	In midsummer, down as far as Peoria and .sometimes below, except during high water, lack of dissolved oxygen excludes fishes from large feeding grounds and destroys large amounts of fish food. Some valuable determinations of dissolved oxygen in the channel were made by the State Water Survey on January 23 and 24 and on Feb- bruary (i and 7, 1925, which are published here for the first time.	cache/inhs-305.pdf	txt/inhs-305.txt