. Electro-physiology. Electrophysiology. Ill ELECTRICAL EXCITATION OF .MUSCLE •201 the excitatory effect of a current is lessened to an extraordinary degree when it passes in and out by artificial sections, or other- wise injured points of the fibre, it is clear that in all these last experiments the relations of excitability may appear to alter in favour of transverse passage of current under certain conditions. And if a much lower excitability of muscle is really found to exist with transverse passage of current, it can only be. FIG. S4.—Apparatus for passing current transversely through the
. Electro-physiology. Electrophysiology. Ill ELECTRICAL EXCITATION OF .MUSCLE •201 the excitatory effect of a current is lessened to an extraordinary degree when it passes in and out by artificial sections, or other- wise injured points of the fibre, it is clear that in all these last experiments the relations of excitability may appear to alter in favour of transverse passage of current under certain conditions. And if a much lower excitability of muscle is really found to exist with transverse passage of current, it can only be. FIG. S4.—Apparatus for passing current transversely through the muscle (sartorius). (Bering.) (Catalogue of Physiological Apparatus. R. Rothe, University Mechanician in Prague.) viewed as an a fortiori proof that the latter is a weaker stimulus than the longitudinal current. The point has been experi- mentally decided by D. Leicher. He used apparatus, which cor- responded essentially with the method employed much earlier by Heriug for the same purpose (Fig. 84). The muscle (curarised sartorius) was fixed between two clamps by the bones at either end, just as in Bering's double myograph. One clamp is fixed, the other is left free, and communicates the movement of the. 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 Biedermann, W. (Wilhelm), 1852-1929; Welby, Frances A. (Frances Alice). London : Macmillan
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