Further remarks on the heat capacity of the restricted primitive model

This concerns the critical behavior of the restricted primitive model. Luijten, Fisher, and Panagiotopoulos [J. Chem. Phys. 114, 5468 (2001)] recently suggested that canonical heat capacity data previously published by us might be consistent with nonclassical behavior, which had appeared unlikely to us. Their argument turns on a supposed similarity of behavior of our results with results they have obtained for a lattice version of the model. We point out that the behaviors are in fact very dissimilar, however, and we explain why we do not find their suggestion plausible. (C) 2002 American Institute of Physics.