Superconducting-Normal Phase Transition in $\left({\mathrm{Ba}}_{1-\mathit{x}}{\mathrm{K}}_{\mathit{x}}\right){\mathrm{BiO}}_3$, $\mathit{x}=0.40\mathrm{}$, $0.47$

Specific-heat measurements on $\left({\mathrm{Ba}}_{1-x}{\mathrm{K}}_x\right){\mathrm{BiO}}_3$, $x=0.40\mathrm{}$ and 0.47, $0.7\le T\le 35\mathrm{K}$, $0\le H\le 9\mathrm{T}$, have determined the coefficient $\left(\gamma \right)$ of the normal-state conduction electron specific heat, and shown well-defined specific-heat anomalies at $T_c$ that are consistent with the value of $\gamma$ and BCS expressions. These results contradict the suggestion in a recent Letter that $\gamma$ is several orders of magnitude greater than these experimental values and that the absence of a correspondingly large specific-heat anomaly constitutes evidence that the transition is an Ehrenfest fourth-order transition.