Using crystal monochromated CuK&agr;‐radiation and a Geiger counter spectrometer, integrated intensity measurements have been made for powder samples of cold‐worked and annealed &agr;‐brass. The effect of cold work is to increase the integrated intensity of the strong lines and make practically no change in the weak lines. The increase for the strong lines is presumably due to a reduction in extinction. Measurements were made of the (400) reflection on a cold‐worked sample and on an annealed sample held at high temperature to demonstrate the difference between the effects of cold work and temperature vibration.