This book is a revision of the various essays of the author, most of which have been published from time to time in this Journal. His "theory" being: 1. Full acceptance of the microbic causation of typhoid fever; 2, an opinion that the bacilli in question may be destroyed in the body; 3, in consequence of that destruction the fever may be aborted or cut short. The means of accomplishing these laudible objects, Dr. Woodbridge thinks is found in the small doses of calomel and other drugs which he specifies. Few statements have met with more vituperative comment than the statement that typhoid fever may be cut short or aborted, and Dr. Woodbridge is not to be blamed if he repels some of the attacks with some heat, although enthusiastic as he is, he must admit that the majority is against his doctrine to-day. Whatever may be urged against Dr.