Identifier: generalphysiolo00verw (
find matches)Title:
General physiology; an outline of the science of lifeYear:
1899 (
1890s)Authors:
Verworn, Max, 1863-1921 Lee, Frederic S. (Frederic Schiller), 1859-1939, ed. and trSubjects:
PhysiologyPublisher:
London, Macmillan and co., limited New York, The Macmillan companyContributing Library:
Columbia University LibrariesDigitizing Sponsor:
Open Knowledge CommonsView Book Page:
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view book online to see this illustration in context in a browseable online version of this book.Text Appearing Before Image:WWText Appearing After Image: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 inNote About Images 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 work.