This monograph, based on an enormous experience with 16,845 consecutive cases of syphilis in the Chinese, white and Negro races, deals with the fundamental problem of immunity in syphilis.
The senior author has had a unique opportunity to observe the varying course of syphilis among these three different races in two first class syphilologic centers, that of the Johns Hopkins Hospital and the School of Hygiene and Public Health, and the Peiping Union Medical College. The junior author was formerly Director of Venereal Disease Control, National Health Administration of China. The study was carried out over a period of more than twenty-five years. While the book is written in a rather philosophic tone, the statistical summations of the experience are impressive, and should satisfy the requirements of readers who wish to examine the data in detail. Scattered studies of race and sex differences in the frequency with which late serious