the experiments described in this work are divided into two main parts. the first is concerned with electrical properties of a single filament of nylon held between two tungsten hook-electrodes. currents were observed in atmospheres of different relative humidities and attempts were made to determine the voltage distribution along the filament. the voltage measurements were made using a high-impedence electrostatic null detector with a potentiometer system for balancing. the results were not highly reproducible and no definite conclusions could be made. the second part deals with currents through capacitor tissue in a metal- insulation- metal sandwich arrangement. a time-dependent polarization was observed and is discussed along with methods for determining an acceptable value for the steady-state current. some attempts are made to apply poole-frenkel theory since there is a certain quantitative agreement with experiment. current-temperature observations indicated that the activation energy is about 1 ev. conclusions concerning the mechanism of conduction are suggested on the basis of available theory.