. Electro-physiology . PIG. 144.—Photographic record of the variations of an ingoing leaf-current, when one lobe is electrically excited. The interruptions of the black line correspond with breaks in the primary circuit of the induction-apparatus. Interval between the excitations about 5 sees. Rapidity of plate about 1 cm. in 2 sees. (Burden-Sanderson.) a second this phase will have reached its maximum, and a second (somewhat slower) and opposite phase sets in, which is, however, less marked, and reaches its maximum in about 1^ sec. after excitation. This, as shown by the photogram, decreases
. Electro-physiology . PIG. 144.—Photographic record of the variations of an ingoing leaf-current, when one lobe is electrically excited. The interruptions of the black line correspond with breaks in the primary circuit of the induction-apparatus. Interval between the excitations about 5 sees. Rapidity of plate about 1 cm. in 2 sees. (Burden-Sanderson.) a second this phase will have reached its maximum, and a second (somewhat slower) and opposite phase sets in, which is, however, less marked, and reaches its maximum in about 1^ sec. after excitation. This, as shown by the photogram, decreases very gradually, and loses itself in the after-effect described above, which is characterised by increased positivity of the lower surface of the leaf; it follows that the second phase is distinct in the first excitation only, those immediately subsequent producing merely a simple, monophasic variation. A long interval
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublisherlondonmacmillan
