" In a work of moderate size, the author has succeeded admirably in presenting the essential details of bacteriological technics, together with a judiciously chosen summary of our present knowledge of pathogenic bacteria. As indicated in the preface, the work is intended as an elementary text-book for students of medicine, but Part II., or Specific Diseases and their Bacteria, will readily commend itself to a large class of practitioners who recognise the value of acquaintance with the behaviour of the bacterial causes of disease, even without a technical knowledge of bacteriology. It is no unfavourable reflection on the scientific character of the treatise, moreoYer, to mention the fitness of this second part for the use of the non- professional readers who may be interested in the science or in its bearing on matters of vital general interest. "In the Introduction the author has sketched briefly, but in a sufficiently com- plete and very interesting way, the history of bacteriology. The chapter on Im- munity and Susceptibility is a more than usually successful attempt to briefly out- line the present status of this very occult study, and in the discussion of the various theories presented, the author has not given undue prominence to any of the tenets. Tuberculosis is considered at comparative length, and all the more important relations of this subject have received attention in the practical way best adapted to the class of readers to which the book is addressed. "Numerous photographic plates illustrate the text in the description of the various bacterial species. Of these photographs, many are very characteristic. The author has adhered with considerable uniformity to an easy and correct style of diction, which is so often lacking in the treatment of very technical subjects. The work, we think, should have a wide circulation among English-speaking students of medicine."—New York Medical Journal. MAISCH'S Materia Medica.—Sixth Edition.—A Manual of Or- ganic Materia Medica : Being a Guide to Materia Medica of 4he Vegetable and Animal Kingdoms. For the use of Students, Druggists, Pharmacists, and Physicians. By JOHN M. MAISCH, Phar.D., Professor of Materia Medica and Botany of the Philadelphia College of Pharmacy. New (sixth) edition, thoroughly revised by H. C. C. MAISCH, Ph.G. In one very handsome 12mo volume of 509 pages, with 285 engravings. Cloth. 10s 6d net. " New matter has been added, and the whole work has received careful revision, so as to conform to the New United States Pharmacopeia. The great value of the work is the simplicity of style and the accuracy of each description. It considers each article of the vegetable and animal pharmacopoeia, and, where important, sections on antidotes, etc., are added. Several useful tables are incor- porated. 5*— Virginia Medical Monthly. " The best hand-book upon pharmacognosy of any published in this country. The revision brings the work up to date, and is in accord with its previous high standard.5-"—The Boston Medical and Surgical Journal. " We can add nothing to our previous commendatory notices of this standard text-book of materia medica. It is a work of such well-tried merit that it stands in no danger of being superseded."—American Druggist and Pharmaceutical Record. OSLER.—Lectures on the Diagnosis of Abdominal Tumours. Delivered before the Post-Graduate Class, Johns Hopkins University, By WILLIAM OSLER, M.D., Professor of Medicine, Johns Hopkins University: Physician-in-Chief to Johns Hopkins Hospital, Baltimore, M.D., Small Svo. Illustrated. Cloth. 6s net. " The volume before us contains six lectures delivered before the post-graduate course at the Johns Hopkins University, which have already appeared in the pa^es of the 'New York Medical Journal.' The first two are devoted to the stomach, the first dealing with tumours formed by the dilated stomach itself, almost always associated with a nodular mass at the pylorus. Amongst the special points to which he calls attention in reference to diagnosis may be mentioned the