A few years ago it was found ls2 that the effect of pure gelatin and crystalline egg albumin on the conductivity of a 0.6 per cent NaCl solution is dependent on the hydrogen ion concentration. Additional increments of protein increased total conductivity when the proteins were highly ionized (pH 3.3) and decreased it when they were relatively less ionized (pH 5.1 and 7.4). At the reaction of hu...