Physiological evidence of the fludity of the conducting substance in the pedel nerves of the slug—Ariolimax columbianus

In measuring the rate of the nervous impulse in the slug Ariolimax columbianus the fact of the remarkable extensibility of the pedal nerves, which were used for the pupose by us, was a matter of constant observation, as it gave us no little trouble in making the determinations.This slug reaches a large size, individuals being frequently met with which, when extended in the act of crawling, are 25 centimeters in length.