ricket-preventing vitamin (or fat soluble A) which is to say, that the imme- diate importance. Studies in Bird Migration, 2 vol. (Leipzig, 1920-1); E. Hoffmann-Krayer, Feste und Bräuche des Schwetzervolkes (Zurich, 1913); Jos. Schrijnen, Nederlandsche Volkskunde (Zutphen, 1916); Raffaele Corso, Folklore, Storia, Obbieto, Metodo, Bibliografia (Rome, 1923); F. Herzfeld, Am Tor von Asien (1920); M. R. Curtis, 1915); Modes of Research Department, Royal Arsenal, Woolwich. SIR RICHARD TETLEY GLAZEBROOK, K.C.B., D.Sc., F.R.S. Plumian Professor cf Astronomy, Cambridge University. Professor of the Central Powers made little objection to economic life of