. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. Didinium nasutum, one of the smallest specimens found. Such specimens result when repeated fission takes place in the absence of food. FIG. 2. One of the largest not in the process of division. FIG. 3. One of the largest specimens just beginning the process of fission as indicated by the additional bands of cilia, c'; c, primary bands of cilia; n, nucleus; , contractile vacuole; s, seizing organ; mm., projected scale. FIG. 4. One of the largest monsters seen. The narrow bands of cilia, c', indicate the


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. Didinium nasutum, one of the smallest specimens found. Such specimens result when repeated fission takes place in the absence of food. FIG. 2. One of the largest not in the process of division. FIG. 3. One of the largest specimens just beginning the process of fission as indicated by the additional bands of cilia, c'; c, primary bands of cilia; n, nucleus; , contractile vacuole; s, seizing organ; mm., projected scale. FIG. 4. One of the largest monsters seen. The narrow bands of cilia, c', indicate the beginning of fission. FIG. 5. A typical specimen selected from a race of exceptionally large Parainecia. Compare with Paramecium in Fig. 6. peculiarities about this creature is the fact that in responding with the avoiding reaction, it always turns toward the same side. One 1 All the figures accompanying this paper were outlined with the camera from specimens killed suddenly with Worcester's fluid and preserved, after washing with water, by adding ten per cent, glycerine solution and allowing it to concentrate by slow evaporation. No change in size or form could be detected during 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 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