. General physiology; an outline of the science of life. . ?^^^^^^ Fig. 202.—Pavamcecium aurelia, polar excitation. A, Unstimulated individual. B, Action of a strong current; the anodic end has become compressed into a point and the contents of the trichocysts have been extruded. C, The positions taken by the cilia (only the outline of the body is sketched) ; at the anode the cilia .are bent more strongly toward the pointed hinder end of the body, at the kathode more towai-d the blunt foi-ward end. D, The same, the position of the body being reversed. (After Ludloff.) re\erse fact, that upon b
. General physiology; an outline of the science of life. . ?^^^^^^ Fig. 202.—Pavamcecium aurelia, polar excitation. A, Unstimulated individual. B, Action of a strong current; the anodic end has become compressed into a point and the contents of the trichocysts have been extruded. C, The positions taken by the cilia (only the outline of the body is sketched) ; at the anode the cilia .are bent more strongly toward the pointed hinder end of the body, at the kathode more towai-d the blunt foi-ward end. D, The same, the position of the body being reversed. (After Ludloff.) re\erse fact, that upon breaking, in addition to the excitation of con- traction at the anode, an excitation of expansion takes place at the kathode. It is interesting that the effects at the two poles upon making are the opposite of those upon breaking. The phenomena in the nerve afford a complete analog}' to this. In the nerve also there are opposite effects at the two poles. This is expressed in the change in irritability that manifests itself at the poles when a galvanic current is passed through the nerve. For example,. 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 Verworn, Max, 1863-1921; Lee, Frederic S. (Frederic Schiller), 1859-1939. London, Macmillan and co. , limited; New York, The Macmillan company
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