This volume is the most interesting and the most remarkable record of a single worker in this field which has appeared since Marro's “Caratteri dei Delinquenti.” It cannot be ranked with the latter book, for Dr. Laurent has not accumulated the large body of minute facts concerning his subjects which Dr. Marro used in so admirable and judicial a manner, making a distinct advance in our knowledge of criminal anthropology. Being, however, less dry and technical, Dr. Laurent's work is much more generally attractive, and it also opens up some of the wider aspects of the subjects with which Marro was not directly concerned. His style, also, possesses in a high degree that lucidity and charm, holding the reader's interest through six hundred pages, which is so common among French scientific writers, and so rare in England and Germany. This remarkable record of his experience was produced by Dr. Laurent as the fruit of some years spent at the Infirmary of the Prisons de la Santé, its publication becoming possible by the enlightened policy of the French administration. How long will it be before we may expect similar records of their experience from English prison surgeons?