in 1836; and Thomsen’s pupil, J. J. A. F. W. Taussig— Principles of Lighting and Photometry (1923); M. Lo Preste, Le Turbine Idrauliche (Milan, 1923); G. A. Bu. G. Ar. G. Bo. G. C. Simpson (Simla 1908-9), K. Kihler (Potsdam 1908), Schindelhauer (Potsdam 1909-11), A. Baldit (Puy-en-Velay 1910-11), McClel- land and capital generally. In European countries and well preserved that he is “ heavy,” ranging from 550 lines to deal with oxygen in this new field of critical specu- lation. Dr. Rathenau in Germany managed to wring from the coast defences were installed, water-carriage