General physiology; an outline of the science of life

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Identifier: generalphysiolo00verw (find matches)
Title: General physiology; an outline of the science of life
Year: 1899 (1890s)
Authors: Verworn, Max, 1863-1921 Lee, Frederic S. (Frederic Schiller), 1859-1939, ed. and tr
Subjects: Physiology
Publisher: London, Macmillan and co., limited New York, The Macmillan company
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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Fig. 252.—Section of Lacrymaria olor. The black lines indicate the cuts. all pieces, the cilia causing the rotation upon the axis, exactly ashappens upon stimulation in the uninjured protist. In the non-nucleated pieces, this normal motion continues, as a rule, for nearlya day. Then the difference between the non-nucleated and the THE MECHANISM OF LIFE 511 nucleated pieces, appears, the former perishing, while the latter re-generate themselves into complete individuals. The behaviour of non-nucleated pieces of cells may, therefore, besummarised in the statement, that, after the passage of a stage ofexcitation caused by the stimulation of the operation, every piececontinues to carry out the movements peculiar to it in the uninjuredorganism and to react to stimuli in the same manner as before theoperation. The normal character of the movements is not changeduntil the appearance of the phenomena of necrobiosis, which affectthe non-nucleated protoplasm and lead to death. It ajjpears in

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