V. On the "blaze currents" of the frog's eyeball

In a recent communication to the Society I have stated that the normal electrical response of the eye to light consists in a current traversing the eye ball in a positive direction,i. e . from fundus to cornea, and that a similar positive response is aroused by meachanical and by electrical stimuli, whatever be the direction of the latter. I have designated this positive response to non-luminous stimuli as the retainal discharge or blaze. With reference to electrical stimulation, its most characteristic from is when it occurs in the same dorection as the current by which it is excited,i. e . when it cannot be polarisation counter-current. It is in such case analogous with the discharge of an electrical organ excited by an electrical current in the direction of normal discharge, and, indeed, it may be of such magnitued as to lead an observer to regard retain in the light of an electrical organ.