Analysis of dielectric data along the coexistence curve in Xe shows that neither revised scaling nor corrections to scaling has a significant effect on the value of the critical exponent $\beta$. The data are best represented by a single $\beta$ value ($\beta =0.356$) over the entire range $2\times {10}^{-5\mathrm{}}<\left|t\right|<3\mathrm{}\times {10}^{-2\mathrm{}}$, but they are also compatible with a variation in $\beta$ from 0.356 at large $\mathrm{}\left|t\right|\mathrm{}$ to 0.340 at small $\mathrm{}\left|t\right|\mathrm{}$. However, these data are incompatible with the Ising $\beta$ value even when correction terms are included. Revised scaling effects are small, and available ${\rho }_d$ values are compatible with either a $\mathrm{}\left|t\right|\mathrm{}$ or a ${\mathrm{}\left|t\right|\mathrm{}}^{1-\alpha }$ variation.

• Received 2 September 1975

DOI:https://doi.org/10.1103/PhysRevA.13.1601