This fourth volume in the series opens some new arenas in the realm of molten salts technology, with research reports on amides, amide mixtures, and their elect

This second volume carries on the excellent work of its predecessor, ex tending its scope to other melts and to other techniques. It continues to present first-

The physicist Kamerlingh Onnes, who was the first to liquify helium (1908), had written on the walls of his laboratory in Leiden: "From measur ing to knowing."