. Contributions to practical physiology and pharmacology. Physiology; Pharmacology. 16 Weights The forward arm of the horizontal lever being longer than the backward arm, the lever itself serves as a load to the muscle. The recording extension adds to this load. As ordinarily employed, the load amounts to two or three grams, when the muscle is attached five centimeters from the fulcrum. This being the case, in most experi-. Fig. 10. Myograph attachments. A. Weights. B. Weight hook. C. Weight pan. D. E, and F. Special weights. G. Counterpoise weight showing end-thrust socket. ments, no addition
. Contributions to practical physiology and pharmacology. Physiology; Pharmacology. 16 Weights The forward arm of the horizontal lever being longer than the backward arm, the lever itself serves as a load to the muscle. The recording extension adds to this load. As ordinarily employed, the load amounts to two or three grams, when the muscle is attached five centimeters from the fulcrum. This being the case, in most experi-. Fig. 10. Myograph attachments. A. Weights. B. Weight hook. C. Weight pan. D. E, and F. Special weights. G. Counterpoise weight showing end-thrust socket. ments, no additional load is required. However, two special forms of weights are sometimes found useful. One of these is very simple, consisting of a five-gram weight wnth a saddle and point arrangement for attaching it to the lever. Fig. 10, D. The other weight is of a slid- ing type. Fig. 10, E. It is supported in part by a saddle groove which rides on a horizontal lever, but chiefly by a horizontal arm. Fig. 10, F, carried about one centimeter above but parallel with the horizontal lever arm. The weight is attached to the horizontal arm by passing the arm through a hole which pierces it. The arm is encircled at centimeter intervals by shallow grooves, and to one face of the weight is attached a round straight spring which presses into the grooves, by means of which it is readily fixed at any point on the arm. The hori-. 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 Guthrie, Charles Claude, b. 1880. [Baltimore, Press of Kohn and Pollock]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
