As very intense sound waves propagate, the wave‐shape changes into one of saw‐tooth form producing abrupt rises in pressure called shock fronts. This waveform distortion into so‐called repeated shock waves is caused by the nonlinearity of the medium. The objective of this study has been to obtain experimental facts relative to the propagation of repeated shock waves in tubes and to compare these with existing theory. An intense sound source was constructed and appropriately coupled to a series of measuring tubes. Observations were made on the velocity and attenuation of fully developed shock waves for a variety of gases, for pressure amplitudes as great as 0.25 atmosphere, and for a fundamental frequency range of from 400 to 1200 cycles per second.The data were compared with previous theoretical work, particularly that of Professor Rudnick. Agreement was found in the general aspects of the theory; the exact magnitude of the effect remains to be explained. This discrepancy between theory and experiment may be resolved by considering in greater detail the absorptive processes involved.