Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 235
Fig. 136. When a ])atterv is known notto be very powerful, the tongueserves as a very convenient gal-vanoscope, to determine whetherthe circuit is in working condition,and npproximately the strength oftiie current. If tiie crural nerve(a white cord next the backbone)of a frog, recently killed, is… … MAGNETIC ElFECT. ^V (totted linos in Figure 13G. The same convulsion occurs at theinstant tlie circuit is broken. By touching the nerve with apiece of zinc, and the muscle witli a copper wire, as representedin Figure 13G, similar convulsions occur, on bringing the freeends of the metals in contact,…
Physics
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