File:American journal of physiology (1898) (14595617590).jpg

Identifier: americanjourn01ameruoft (find matches)
Title: American journal of physiology
Year: 1898 (1890s)
Authors: American Physiological Society (1887- ) American Physiological Society (1887- ). Abstracts of papers presented at the fall meeting American Physiological Society (1887- ). Proceedings
Subjects: Physiology Physiology
Publisher: (Bethesda, Md., etc.) American Physiological Society (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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Figure 2.
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Figure 3. Figure 4. Oxytricha (?) —After being subjected for several hours to a streamof hydrogen, this form begins to take up water, and becomes lessflattened, the contractile vacuole being much distended. Like Para-moecia, it becomes sluggish and gradually sinks, the vacuole con-tracts, and it remains almost motionless at the bottom. Suddenly at or near one pole, usually the oral,the surface loses its smooth contour,the surface layer breaks down intosmall globules, and the change pro-gresses toward the opposite pole,the protoplasm meanwhile becomingdetached in spherical masses large and small; these quickly dissolve,and nothing is left of them but scattered granules. As the nuclei passout they become spherical. The cilia usually, but not invariably,cease moving before the dissolution of the cell wall begins (Fig. 5).

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