The adaptive chin

E. Lloyd DuBrul, Harry Sicher. The Adaptive Chin. Charles C Thomas, Spring-field, Illinois, ix plus 97 pp., frontispiece, 47 figs. 1954. Price, $3.50. This little book, which seems to have escaped the notice of most if not all zoological bibliographical services deserves to be rescued from such oblivion. The book is co-authored by a dentist and an M. D., but both are primarily anatomists, and they have produced a small but fine evolutionary study on the functional anatomy of mammals. Man is an actor on their stage, true, but so are several other Primates, as well as representatives of the Lagomorpha, Carnivora, and Notoungulata. Skillfully, the authors have chosen evolutionary experiments, that have …