“…1 represent 4% uncertainties, and are for reader convenience only: Larrea et al report errors of roughly this level, and the reports of Smith, Baratoff, and Cardona ͑SBC͒ and FM are assumed comparable since no estimate is provided. There is also a report by Feder et al 12 with suspensions of 1 -5 m tin spheres, which we, however, neglect since the estimated diameter above which size effects are unimportant is ϳ7.5͑T͒, or ϳ5 m at 0.95T c . 11 SBC reported results for tin from measurements on suspensions of 5 -15 m diameter spheres suspended to a volume filling factor of Ͻ5% over 0.3Ͻ t Ͻ 1, and for indium from measurements on 1 -10 m microspheres with a filling factor of Ͻ5% over the same temperature range.…”