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Manual of Physico-Chemical Measurements.—W. Ostwald. Translated by James Walker. London and New York: Macmillan.
A Laboratory Manual of Physics and Applied Electricity.—E. L. Nichols. 2 vols. London and New York: Macmillan.
Anfangsgründe der Physik mit Einschluss der Chemie und Mathematischen Geographie.—K. Koppe. 20. Aufl. Ausgabe B in 2 Lehrgängen. Für höhere Lehranstalten nach den preuss. Lehrplänen von 1892. Bearbeitet von A. Husmann. II. Th.: Hauptlehrgang. Essen: G. D. Baedeker.
Elementi di Fisica ad Uso delle Scuole secondarie.—F. Cintolesi. Livorno.
Thermo Dynamics treated with Elementary Mathematics.—J. Parlseo. London: S. Low & Co.
THE MOST RECENT WORK.
A Seidlitz Powder.—A. Gunn made an examination of some powders and found the blue powder to consist of magnesium sulphate and sodium bicarbonate. The white powder consisted of tartaric acid. Evidently there had been a mistake or else it was a bold attempt to cope with the cutting system and its cheap prices. One wonders that the makers should expect the unusual effect of trying to dissolve the contents of the blue paper to pass unnoticed.—Pharm. Jour. Trans., 1894, 534.