One of the neglected branches in the teaching of medicine is toxicology, mainly because a complete fundamental understanding of all basic sciences must be comprehended by the student before he can fully understand the close relationship between the diagnosis and treatment of poisoning. With the introduction of many new drugs and health-injurious solvents in industry, accurate knowledge must be provided to the beginning practitioner to diagnose and treat the toxic effects. The pocket size of this volume makes it an indispensable tool for emergency calls. Though Trumper does not deviate from the general outline of toxicologie textbooks dealing with corrosives, simple and specific irritants and neurotic poisons, his hundred page appendix on reptile venoms, insect bites, insulin, thallium, dinitrophenol and zinc stearate poisoning gives information otherwise available with difficulty. The addenda on alcoholism, lipoid solvents and first aid and the emphasis on gas mask service make this little book a real contribution to practical medicine. For the older physician the treatment on hydrogen ion concentration—the bugbear of many medical minds—is presented in a simple and understandable manner.