In a recent article by DeVries and Peng, it was suggested that the concept of a geometric reaction cross section was not meaningful since sigma/sub R/ exceeded the geometric values for heavy nucleus-nucleus collisions. It is shown here that this conclusion is a consequence of using nuclear charge distributions, in place of the required nuclear single-particle distributions, in the calculations for sigma/sub R/. Hence, the applicability of geometric limits for sigma/sub R/ remains undetermined.