General physiology; an outline of the science of life . the constant current the following is notice-able : At the kathode after the making, the phenomena of excitationgradually disappear, and the pseudopodia there assume their formersmooth appearance, while upon the side of the anode the excitation Cf. Verworn (89, 2, 3). STIMULI AND THEIR ACTIONS 417 continues as long as the current remains. This latter is expressed in aconstant advance of the phenomena of contraction. The protoplasmconstantly draws back from the anode toward the body, and soonthe pseudopodia are wholly drawn in. Then the co
General physiology; an outline of the science of life . the constant current the following is notice-able : At the kathode after the making, the phenomena of excitationgradually disappear, and the pseudopodia there assume their formersmooth appearance, while upon the side of the anode the excitation Cf. Verworn (89, 2, 3). STIMULI AND THEIR ACTIONS 417 continues as long as the current remains. This latter is expressed in aconstant advance of the phenomena of contraction. The protoplasmconstantly draws back from the anode toward the body, and soonthe pseudopodia are wholly drawn in. Then the contraction isnoticed upon the body itself: the protoplasm of the walls of thevacuoles retracts more and more toward the interior, the vacuolescollapse, and the protoplasm itself disintegrates partly into itsgranules. This process of amalgamation and disintegration con-tinues as long as the current flows, but gradually decreases in in-tensity. Hence there can be no doubt that the constant currentstimulates throughout its duration. At the moment when the. Fig. 198.—Actinospkcerium Eichhomii in four successive stages of polar excitation by the constantcurrent. The protoplasm is disintegrating from the side of the anode. current is broken the amalgamation-process at the anode ceases atonce. A few phenomena of stimulation are noticeable at the kathode,the pseudopodia again showing contraction-phenomena and theirprotoplasm flowing together into globules and spindles. But thiseffect gradually ceases and there is no complete retraction of thekathodic pseudopodia. If the current be not broken, the body ofthe Actinospkcerium disintegrates from the anode constantly, butin the course of time more slowly, until finally, if the current isfeeble, the process wholly ceases. If, however, the current isstronger, the disintegration proceeds rapidly until the whole bodyhas fallen into a lifeless mass of granules. Hence, Actinosphcermmis stimulated to contraction by the making of the constant curr
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
