The author is best known for two excellent books on the history of poisons and of quacks. As curator of the museum of the Royal College of Surgeons he has studied the history of medical technic. His guide is a history of the development of medical accessories and apparatus including the scalpel, the tourniquet, the forceps, the stethoscope, the thermometer and what not. The book also describes faithfully the anatomic preparations in the museum, Lister's instruments, the hands of several famous surgeons, and innumerable other objects of interest. For those who have visited the museum it is a memento of great value; others who read the little guide will impatiently await their first visit.