. 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). 1288 Rural School Leaflet has at the rear end of its body three long, platehke gills filled with breathing tubes, which extract air from the water. All the n\-mphs grow by shedding their skins as often as they become too small. When they finally have completed their growth, they crawl up and cling fast to some object above the surface of the water 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). 1288 Rural School Leaflet has at the rear end of its body three long, platehke gills filled with breathing tubes, which extract air from the water. All the n\-mphs grow by shedding their skins as often as they become too small. When they finally have completed their growth, they crawl up and cling fast to some object above the surface of the water and shed their n^Tnph skins. Hence- forth they dart about on strong wings above the stream or the pond in the bottom of which was their early home. The dragon flies are very beneficial to mankind, for, as they fly swiftly, they capture and eat many mosquitoes. The dragon fly and the damsel fly nymphs may be found on the bot- tom of any shallow pond or brook, and may be placed in an aquaritmi where their habits may be observed. However, only one should be put in a jar, since, if two are put in the same receptacle, the larger will eat the smaller. A jelly tumbler makes the best aquarium for one of these creatures. A little sand should be placed on the bottom and a small water weed should be planted in the sand. After the timibler has been filled with water, it is ready to receive the captive n>Tnph. Often the trans- formation from the nymph to the winged adult will take place in the schoolroom, and it is well worth while taking the time to have children watch this interesting Nymph oj dragon fly 1 Nymph oj damsel fly. 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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