On: “EFFECT OF POROSITY, GRAIN CONTACTS, AND CEMENT ON COMPRESSIONAL WAVE VELOCITY THROUGH SYNTHETIC SANDSTONES” BY ANDRIS VIKSNE, JOSEPH W. BERG, JR., and KENNETH L. COOK (GEOPHYSICS, FEBRUARY, 1961, PP. 77–84).
The experimental data reported by Viksne, Berg, and Cook have been reinterpreted in the light of a more rigorous analysis of the variables. Since the experimentally determined velocities of compressional waves in the synthetic cores can be described analytically in terms of the porosity and cement content alone with an accuracy comparable to that expected of the experimental measurements, it is not possible to establish what influence manufacturing pressure may have on velocity (other than that resulting from its effect on porosity). In particular, it cannot be said that the reported experiments have demonstrated that grain‐to‐grain contacts affect the velocity in any way. These conclusions are substantially different from those drawn from the same data by Viksne, Berg, and Cook.