  Results of low temperature dielectric measurements on the mixed
(Ca_(1-x)Pb_(x))TiO_(3) system are presented to show that a dielectric anomaly
appears for x \geq 0.10. The observed dielectric peak is shown to be due to a
thermodynamic phase transition and not due to a relaxor or dipole glass type
transition. Curie-Weiss fit to the dielectric constant gives negative Curie
temperature which points towards an antiferroelectric transition. Arguments are
advanced to propose that CaTiO3 may be an incipient antiferroelectric in which
Pb^(2+) substitution stabilises the antiferroelectric phase.
