300 REVIEWS.

Handbuch der Pockenbekampfung und Impfung. By Professor Dr. Otto Lentz und Professor Dr. H. A. Gins. Berlin: Richard Schoetz. 1927. Pages 906. Price bound, 50 marks.

The subject matter of this work extends to 906 pages and is arranged under three heads, the first of which deals with the history of the pox diseases of man and animals, the second with the specific prophylaxis of the human disease (smallpox), and the third with the results of the researches regarding the etiology and relationships of smallpox and similar diseases in man and animals. In all there are twenty chapters, in the writing of which Drs. Lentz and Gins have had the collaboration of 14 other distinguished authorities. The result is a work that deserves the highest praise aud has no rival in the subject with which it deals. Its chief interest lies in connection with the human disease, but the chapters that deal with cow pox, horse pox, sheep pox, and fowl pox, are also unique in their comprehensiveness. The lesions of these, as well as of smallpox, are faithfully reproduced in coloured plates and small figures in the text. A very complete list of references to the literature on the subject is given at the end of each chapter.

A Treatise on the One-humped Camel in Health and Disease. By A. S. Leese, M.R.C.V.S. Stamford: Haynes & Son. 1927. Obtainable only from the author, c/o the publishers. Price, 16s.

Mr. Leese held the appointment of " Camel specialist," to the Government of India from 1907 to 1913, and during the following four years he was engaged in similar work in the East Africa Protectorate and Somaliland. The present work is the outcome of the unrivalled opportunities which these positions afforded him to extend knowledge regarding the camel in health and disease, and he is to be congratulated on having produced a work that will prove valu­able, and indeed indispensable, to all those having a practical interest in that animal either in peace or in war. In the preface the author modestly states that the book has not been written primarily for the scientist, but apparently that only refers to the fact that the diseases of the camel are dealt with from a practical point of view, and not with the fullness that would be expected in a work on pathology.

Of the 367 pages that compose the book, 140 are devoted to the camel in health, and these deal with feeding and general management, breeding, the different types of camels (for riding, pack work, or draught), transport by rail and ship, etc. The remainder of the work, or veterinary section, deals with the surgical and medical treatment of the accidents and diseases to which the camel is liable. There are 20 good plates, mostly reproduced from photo­graphs, and a very useful glossary of vernacular and technical terms.

A History of the Royal Army Veterinary Corps. 1796-1919. By Major-General Sir Frederick Smith, K.C.M.G., C.B., Formerly Director-General, Army Veterinary Service, Fellow and Hon. Associate of the Royal College of Veterinary Surgeons. Published for the Royal Army Veterinary Corps Officers' Fund by Bailliere, Tindall and Cox, London. 1927.

The moment for writing the history of the Royal Army Veterinary Corps was opportune in view of the great credit with which the Corps emerged from the recent war, but it might have been missed, with the possibility of postponement to a date when the discovery of the facts would have been much more difficult. Much credit is due to the Committee of the Royal Army Veterinary Corps Fund for having agreed to bear the expense of publication, but above all one has reason to be thankful that the writing of the history was undertaken by Sir Frederick