The book is edited by Hamburger and consists of reviews by laboratory experts of the various points on epidemiology, bacteriology, toxin, toxoid, antitoxin, pathogenesis, pathology and pathologic anatomy and discussions by clinicians of the various types of diphtheria (nasal, aural, dermal, vulvar, etc.), the use of the electrocardiograph, prognosis, prophylaxis, therapy and serum sickness. The articles are well written and, although the review is comprehensive, it contains nothing that is new to American readers. One could hardly agree with the statement that tracheotomy predisposes to diphtheria septicemia. That the organisms of diphtheria are found in the myocardiums of a large percentage of persons suffering from diphtheria is a point that needs corroboration. The five colored illustrations are excellent. On the whole, the book is a good review of the current work on diphtheria.