We may say a word, in conclusion, of the relation of the processes whose general mechanism we have here described to the electrical changes in the stimulated nerve. it is a noteworthy fact that the current of action which follows upon a momentary stimulation of the nerve reaches its conclusion, on the average, as early as 0.0006 to 0.0007 sec. after the application of the stimulus, and therefore fal Is completely within the period of nervous inexcitability. it would appear, then, that the variation is connected with the inhibitory forces, or with the passage of positive into negati­ve molecular work. We must, however, have further information, as regards the character of this connexion, before we can think of turning the electrical processes to theoretical account.