A lower limit for the resistivity of commercial ceresin is set at 1.76×1019ohm‐cm if the voltage gradient is 2000 volts per cm the thickness of the sample is 0.214 cm and the temperature is 23°C. There is a comparatively large scattering of time functions used in the equation for the discharge current if expressed in accordance with Wagner's theory. The chargeQ``stored'' in ceresin is a function of time. At any time after the application of the voltage, this charge is proportional to the voltage.P/Ewas measured as a function oft.The increase is found to be more rapid than is claimed by other investigators. No variation ofP/EwithEwas found. The results, however, are not quite conclusive, because of the inherent weakness of the method used in determining the polarization. The resistanceRas defined by Richardson is calculated and found not to be constant for ceresin but to vary both with time and voltage.