Abstract
Vibrations from tuning forks, direct current of intensities from 0.15 milliamps to 6.00 milliamps, and alternating currents of intensities from 1 to 2 milliamps decrease the elasticity of protoplasm in cells of Spirogyra as evidenced by the observations that centrifugal accelerations displaced the chloroplasts more readily in cells exposed to the above stimulants than in cells which were not so exposed.
We are deeply grateful to Mr. Jack Gottlieb who was employed on N. Y. A. for aid in obtaining the data.
