clearly that such, standard deflection gives measure not only of the electrical resistance, but also—due reservation being made of the effect of drying in the course of a prolonged observation at raised temperature—is itself available in measure of the alteration of temperature of the nerve.
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Exp. 2344.—Deflections by a small constant E.M.F. (0’002 volt) through a Nerve at rising and falling Temperature and through two Galvanometers. Time. Thermometer. Demonstrating galvanometer, G*. Recording galvanometer, G2. 1 min. 16-5° 18 ‘5 c.m. 14 '0 mm.
- - w 5 16 o 18-5 „ 14-0 „
10 18-0 19*5 „ 15'0 „ 15 24-0 21-5 „ 17 0 „ 20 30-5 25-5 „ 20 0 „ 25 35-5 28*5 „ 23 0 „ 30 39 0 30-0 23-5 „ 35 40-0 30-0 2 24 -5 „ 40 38 0 29-0 „ 23*0 „ 45 33 -0 26*0 „ 20-0 „ 50 28 *0 22 0 „ 17 0 „ 55 25 0 20 -5 „ 16-0 „ 60 23 0 19*0 „ 15-0 „
- * increments o f tem perature - = increments o f deffection read upon - • « « » // measured from the record o f Ga .
10 15 20 25 JO 55 40 45 50 55 60 min.
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[Experiments on the comparative effects of acids and bases upon the A and K currents, have shown that within a certain moderate range of concentration (soakage of the nerve in 15 to n/20 solution for one minute) acid favours the K current and disfavours the A
