. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. â n"**" iM not cauM n theM con- ited lenRo, is (the current IP to its own h above, and I eleotro-mag^ (rrlter, which mm mmmmm. immm a, a, colli of wire; « itcel pl«t« «; d, tnnlng-forki - to lie working in ion of the our- ig-style, which tee. ding a single traction, and ) character of ibtained. }-nerve prepa- 1 usually con- gastrocnemius tvith the sciatic ed, cla
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. â n"**" iM not cauM n theM con- ited lenRo, is (the current IP to its own h above, and I eleotro-mag^ (rrlter, which mm mmmmm. immm a, a, colli of wire; « itcel pl«t« «; d, tnnlng-forki - to lie working in ion of the our- ig-style, which tee. ding a single traction, and ) character of ibtained. }-nerve prepa- 1 usually con- gastrocnemius tvith the sciatic ed, clamped by the femur cut he muscle, is itimulation, to THE HTUDY OF MU8CLE PHYSIOLOGY. 179 raise a weighted lever which is attached to a point writing on a cylinder moved by some sort of clock-worlc. In this cam the cylindur is kept stationary during the contraction of tlie mus- cle ; hunoe the records appear as straight vertical linos. For recording movements of great rapidity, so that the in- tervals between them may be apparent, such an apparatus m is. Fio. 186.âSpring myogmph of On Bol»-Iio]nnoiid (after Roeenthtl). The amnge- menta for reglaterlng varioua detalla are almllar to thoee for pendulam myottraub (Fig. 178). figured here (Fig. 165) answers well, the vibrations of a tuning- fork being written on a blackened glass plate, shot before a chro- nograph by releasing a spring. Several records may be made successively by more compli- cated arrangements, as will be explained by another figure later. TBB JLPPABATUB USBD FOB THB STmuXiATION OF MnSOLB. It is not only important that there should be accurate and delicate methods of recording muscular contractions, but that there be equally exact methods of applying, regulating, and measuring the stimulus that induces the contraction. Fig. 166 gives a representation of the inductorium of Du Bois-Beymond, by which either a single brief stimulation or a series of such repeated with great regularity and frequency ':
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