Our X-ray scattering measurements of molten FLiBe are compared to those measured by Vaslow and Narten and displayed in Fig. . We find the small first peak in the reduced structure factor at 1.7 Å -1 that Vaslow and Narten 42 observed to increase with the concentration of BeF 2 in LiF-BeF 2 mixtures. The first three peaks in the reduced structure factor match closely in position but vary slightly in intensity likely due to changes in data processing.