Discrepancy in the Heat Capacity of LiquidHe3

High-precision $P_v\mathrm{}\left(T\right)\mathrm{}$ measurements have been made on liquid ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ at low temperatures; the results yield values for the derivative of the heat capacity, $\frac{\partial C_v}{\partial v}$, which can be compared with those from actual heat-capacity measurements. The comparison shows agreement between the present data and $\frac{\partial C_v}{\partial v}$ from heat capacities of Wheatley but disagreement with $\frac{\partial C_v}{\partial v}$ from recent heat capacities of Haavasoja.