General physiology; an outline of the science of life . Fig. 168.—Stentor ccendeus. A, Wholly extended in rest ; B, in the condition of moderate con-traction as in free swimming; C, completely contracted. undisturbed; and perhaps this is true not only of muscle but ofthe narcotic conditions of all living substance. Recently, Massart (93) has been able to abolish completely thedevelopment of light in Noctilucce by alcohol, by laying severalsheets of filter-paper wet with alcohol over the vessel containingthe sea-water in which the organisms were swimming quietly uponthe surface ; the vapours of
General physiology; an outline of the science of life . Fig. 168.—Stentor ccendeus. A, Wholly extended in rest ; B, in the condition of moderate con-traction as in free swimming; C, completely contracted. undisturbed; and perhaps this is true not only of muscle but ofthe narcotic conditions of all living substance. Recently, Massart (93) has been able to abolish completely thedevelopment of light in Noctilucce by alcohol, by laying severalsheets of filter-paper wet with alcohol over the vessel containingthe sea-water in which the organisms were swimming quietly uponthe surface ; the vapours of the alcohol were thus forced into con-tact with the Noctilucce,. After a short time the latter could notbe induced by any stimulus to emit light. Finally, best known are the depressing effects of narcotics uponthe activity of the ganglion-cells of the central nervous system, STIMULI AND THEIR ACTIONS 377 both those that produce motor impulses, and those that arethe seat of the sensations, of consciousness. In their anassthe-tising action upon the c
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Keywords: ., bookcentury1800, bookdecade1890, bookidgen, booksubjectphysiology
