. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 6o all ordinary work and attend to him alone, possible, this wonderful Fig. 21.— The life history of a dragon-ffy as seen in an aquarium. Each child should see, if Floating in the water of a pond or stream are queer little bundles of grass or weed stems with now and then a tiny peb- ble clinging to the mass. Close examination will prove this to be the float- ing dwelling of one of our insect neighbors, the cad- dice-worm. Contrasting st
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 6o all ordinary work and attend to him alone, possible, this wonderful Fig. 21.— The life history of a dragon-ffy as seen in an aquarium. Each child should see, if Floating in the water of a pond or stream are queer little bundles of grass or weed stems with now and then a tiny peb- ble clinging to the mass. Close examination will prove this to be the float- ing dwelling of one of our insect neighbors, the cad- dice-worm. Contrasting strangely with the untidy exterior is the neat in- terior, with its lining of delicate silk, so smooth that the soft - bodied creature which lives in- side is safe from injury. The commonest of the many forms of houses found here are those illustrated in figures 22 and 23. These will find Fig. 22.—Case of caddice-worm. all they wish to eat in a well- stocked aquarium. When full grown they will leave the water as winged creatures, like figure 24, and return to it no more. There is surely no lack of material furnished by Mother Nature for the study of aquatic life. Everyone who really believes in its usefulness can have an aquarium, and will feel well repaid for the time and eflFort required when the renewed interest in Nature is witnessed which this. 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 Cornell University. Agricultural Experiment Station. Ithaca, N. Y. : The University
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