. Eight lectures on the signs of life from their electrical aspect. Electrophysiology. 90 THE SIGNS OF LIFE [LECT. strongest negative with a closure time of sec. The polarisation occurred after a current of i Daniel passed for 10 minutes; the strongest positive polarisation after a current of 20 Groves passed for sec- '•> m tne latter case the appeared to be rather less than that of a FlG. 39.—T is the time of closure, A the density of the polarising current, + S the strength of the secondary electromotive effect, so that the plane viewed in perspective is
. Eight lectures on the signs of life from their electrical aspect. Electrophysiology. 90 THE SIGNS OF LIFE [LECT. strongest negative with a closure time of sec. The polarisation occurred after a current of i Daniel passed for 10 minutes; the strongest positive polarisation after a current of 20 Groves passed for sec- '•> m tne latter case the appeared to be rather less than that of a FlG. 39.—T is the time of closure, A the density of the polarising current, + S the strength of the secondary electromotive effect, so that the plane viewed in perspective is the T A Plane. The individual ordinates S are not represented, but only the curves joining the ordinates belonging to given current density and given time (from du Bois-Reymond, Archiv, 1884, p. 15). § 57. Two criticisms.—Hermann—du Bois' former pupil and untiring critic—pounced at once—showing and saying in a paper of upwards of sixty closely printed pages of Pfluger's Archiv (vol. xxxiii.), that du Bois' positive polarisation current was in reality a post-anodic action-current. Hering also inter- vened, and said the same thing in two successive papers of the Wiener SitzungsbericJite (i2th and I3th communications, 1883). Both du Bois' critics confined themselves to a discussion of the interpretation to be placed upon du Bois' phenomenon, and proved that it was of post-anodic nature, and that the designa- tion of positive polarisation was a very unhappy one. But the critics did not demur to or subtract from the fact itself, nor. 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 Waller, Augustus Désiré, 1856-. New York : E. P. Dutton
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