. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 2030 The Cornell Reading Courses an abundance of vegetation. Among the Crustacea there are the fresh- water sow bug, Asellus, and the fresh-water shrimps, Hyalella, Gam- marus, and Eucrangonyx. These may be obtained from almost any swamp or marsh .having permanent pools containing vegetation. If the plants are pulled up by the roots and rinsed in a
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 2030 The Cornell Reading Courses an abundance of vegetation. Among the Crustacea there are the fresh- water sow bug, Asellus, and the fresh-water shrimps, Hyalella, Gam- marus, and Eucrangonyx. These may be obtained from almost any swamp or marsh .having permanent pools containing vegetation. If the plants are pulled up by the roots and rinsed in a bucket of water, the animals will fall off into the water. Nearly all of the fresh-water snails and small clams, Sphaerium, are relished by many pond fishes. The forms illustrated in figure 198 may be collected in almost any pond or stream where vegetation is thick. The food of all of these molluscs consists of vegetable matter, and when planted in a pond with growing plants they will reproduce at an enormous rate. Aquarists have introduced an African snail of the genus, Limna?a, which has been successfully bred in large numbers in a pond at Ithaca,. Fig. 191.— Nymph of mayfly. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State College of Agriculture; Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?]
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