COMMENTS ON 2 LETTERS BY NEUBAUER ON CREEPING AND CIRCUMFERENTIAL WAVES [J ACOUST SOC AMER 44, 298(L) (1968) - 1150(L) (1968)]

Neubauer has offered some interesting circumstantial evidence for the existence of several surface waves. However, there remain discrepancies between his results and known theory. He must also present stronger evidence than that given to discriminate between his surface waves and other phenomena explainable by the same data. His use of the schlieren technique is very promising, but he does not take full advantage of its potential. © 1969, Acoustical Society of America. All rights reserved.