. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 232 JENNINGS AND revolving to the left, and turning toward the aboral side when stimulated mechanically or chemically. 2. Posterior half, without oral groove or mouth (Fig. 4, b}. Much pains was taken to remove the entire oral groove and mouth, so that the posterior piece was usually a little less than one half the body. It was possible to distinguish the aboral side by the presence there of the contractile vacuole. The pos- terior half swims in a spiral, revolving, like the uninjured animal, to the left, and keep
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 232 JENNINGS AND revolving to the left, and turning toward the aboral side when stimulated mechanically or chemically. 2. Posterior half, without oral groove or mouth (Fig. 4, b}. Much pains was taken to remove the entire oral groove and mouth, so that the posterior piece was usually a little less than one half the body. It was possible to distinguish the aboral side by the presence there of the contractile vacuole. The pos- terior half swims in a spiral, revolving, like the uninjured animal, to the left, and keeping the aboral side to the outside of the spiral. Its movements are slower than those of the an- terior half, and it is much less sensitive, not reacting so readily to stimuli. The reaction to mechanical and chemical stimuli is by jerk- ing backward and turning toward the aboral side, as in the uninjured individual. Thus the presence of the oral groove and oral cilia is not necessary in order that the usual move- ments and reactions may occur. 3. Middle third of Parainccinin (anterior with mouth and oral and posterior ends removed). — This behaves cilia. £, posterior half, . .. ... , . essentially like the anterior and posterior halves, or the entire 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
