The basis of tissue evolution and pathogenesis. By Albert A. Gray, M.D., C.R.S.E., President, Section of Otology, Royal Society of Medicine, 1914–1916; President, Section of Otology, British Medical Association, 1922; President of the Collegium Otolaryngolieum, London, 1929. Author of “The Labyrinth of Animals.” “The Ear and Its Diseases,” “Otosclerosis,” “Atlas of Otology,” etc. Glasgow: Jackson, Son & Co., Publishers to the University, 1937; 92 pages with Index and seven illustrations. Price, 7/6 net