. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH OF TADPOLES AND CROWDING 367 trations too weak to kill. It is surprising therefore to find that they retard exceedingly little as they do. 9. Flowing Water.—The crucial test for many factors of growth was to culture the tadpoles in running water. Individuals in varying numbers were placed in cheesecloth sacks which would just fill o FIG. 12. Growth of tadpoles in flowing water at variable temperatures. The cultures contained the varying numbers of individuals indicated by the numerals. Upon the 42d and 58th
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GROWTH OF TADPOLES AND CROWDING 367 trations too weak to kill. It is surprising therefore to find that they retard exceedingly little as they do. 9. Flowing Water.—The crucial test for many factors of growth was to culture the tadpoles in running water. Individuals in varying numbers were placed in cheesecloth sacks which would just fill o FIG. 12. Growth of tadpoles in flowing water at variable temperatures. The cultures contained the varying numbers of individuals indicated by the numerals. Upon the 42d and 58th days respectively, 1 and 4 individuals were isolated from culture e, and upon the 64th day 1 individual was isolated from culture d, where- upon rapid growth was resumed by the isolated ones. All cultures were from brood U in 1500 cc. of rapidly changing water. beakers, the open tops of the sacks being supported by wires above the beakers so that water could not overflow the edges. The sacks were held spread out by frames made of glass rods. Water was renewed in each beaker at rates of 300 to 600 cc. per minute, day and night, for several 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
