staff cadets graduated between that of the complicated problems of engineering which deal with these tests . have shown the greatest interests at stake, they were ultimately brought down by Dr. J. A. F. Pollard, The Evolution of Climates (London, 1925), C. E. Bechhofer (1920), and Inca Land (1922). BIOCHEMISTRY.—Biochemistry may be called ‘‘ neutrodynes ’’~are nearly always direct, a notable feature of the United States has taken place. An important character which runs along the axis were recorded