Tropical medicine is a singular specialty because it is'a conglomerate of sections from nearly all the medical and biologic sciences. Tropical medicine deals with the medical problems of the earth's equator. The physician in the tropics, therefore, must know something of nearly everything; he must be protozoologist, bacteriologist, clinician, laboratory technician, hygienist, entomologist, chemist, expert in virus, rickettsial and metabolic diseases, helminthologist, drainage engineer, rat exterminator, administrator and surgeon. To provide him with a portable text dealing with these subjects in acceptable detail would be impossible. A manual, therefore, must limit itself to the most important topics likely to be required by the physicians actually in the tropics.
How well this manual has achieved its design to provide a concise and dependable source of old and new information is best comprehended by a careful study of the book. The numerous diseases and hazards of the tropics are presented briefly and