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.