This volume, as its title indicates, is mainly a treatise on infection in general and oral infections in particular. Part I contains a few short introductory chapters on the morphology and cultivation of bacteria, asepsis and antisepsis, and two groups of bacteria, the streptococcuspneumococcus group and the spirochetes, are taken up in some detail. The subject of immunity is well covered. The remainder of the book, parts II and III, is devoted to the discussion of infection, followed by chapters on dental caries, the bacteriology of the dental pulp. Vincent's stomatitis, osteomyelitis, actinomycosis, focal infection and the oral manifestations of certain extraoral infections. Although this book could hardly be used as a textbook in a first course in bacteriology for dental students unless accompanied by a satisfactory general text or manual, it would be an excellent reference book for advanced students. It would also serve as an invaluable handbook for