Magnetic susceptibilities of Gd2O3and Dy2O3have been studied from about 300° to 1500°K and 300° to 1250°K, respectively. The paramagnetic susceptibility data of both oxides obey the Curie‐Weiss law. This information supports the suggestion that the small deviations from the Curie‐Weiss law found in gadolinium and dysprosium metals are due to conduction electron magnetization. The ions Gd3+and Dy3+in the oxides possess the Bohr magneton numbers 7.80 and 10.52, respectively.