Vaccine Therapy

it into a systematic account of the applications of vaccine treatment to the bacterial diseases of the various parts of the body." Consequently the book has been completely re-written for the present edition. It is divided into twelve chapters. The first chapter deals with the antibodies; toxin and antitoxin; agglutinins; lysins; opsinins. The nature, source and functions of these are discussed. In the next chapter the value of opsonic index estimations in the diagnosis, prognosis, and treatment is considered. In the two following chapters the method of preparation and administration of the vaccine; and the rationale of vaccine treatment and causes of failure are fully dealt with. In chapters 5 to 12 the application of vaccine therapy in the diseases of the various systems is set forth in detail. The opinion of the author in regard to the value of the opsonic index as a guide in vaccine therapy may be gleaned from the following (page 81) :?"The impression will,no doubt, have been received that I regard the opsonic index as