Density of states in twoA-15 materials

New data are presented and analyzed, along with previous data, in a refinement of an earlier method of obtaining the density of states from measurements of the slope of the critical field at $T_c$ and ${\rho }_0$. For ${\mathrm{Nb}}_3$Sn the data are consistent with the idea that $T_c$ is a function mainly of $N\left(0\right)\mathrm{}$. For ${\mathrm{Nb}}_3$Ge the data do not indicate such a simple behavior, and a discussion is given of this discrepancy in terms of anomalies in the sample properties.