354 REVIEWS.

Other passages equally absurd might be cited, but these are enough to show how unwise Dr Fleming has been in going beyond the duties of a translator. Fortunately the" amendments" are not numerous, and the brackets will warn the student when he comes to dangerous ground. The type, paper, and binding reflect credit on the publishers.

Age of the Domestic Animals. A Treatise on the Dentition of the Horse, Ox, Sheep, Hog, and Dog. By RUSH SHIPPEN HUIDEKOPER, M.D. Philadelphia and London: F. A. Davis, 1891.

THIS hook deserves a hearty welcome from English-speaking veterinary surgeons and students and also from stock-owners. It is what it professes to be-a complete treatise on the dentition of the common domesticated animals; at least, it is as complete as it was possible to make it within the compass of 210 octavo pages. The text is clear and concise, and the illustra­tions, which number no fewer than 194, are admirable. Most of tbe latter are borrowed from Continental authors, hut no apology is necessary for that, as few of them could be improved upon, and to have prepared original illus­trations would necessarily have added greatly to the selling price of the book. We cordially recommend the work to all who desire to have a handy and reliable guide to the dentition of farm a,nimals as a means of determining their age.

Special Report on the Cause and Prevention of Swine Plague. By THEO­BALD SMITH, Ph.B., M.D. Published by the authority of the Secretary of Agriculture. Washington, 1891.

FOR a number of years Dr Salmon, Chief of the Bureau of Animal Industry, and those associated with him in carrying out investigations regarding epI­zootic diseases of the pig, have maintained that in addition to hog cholera (swine fever) there is prevalent in the United States an infectious disease which they have been able to identify with the German Sdl'weine-seuche.

This report gives a detailed account of the investigations and experiments that have led to the differentiation of the two diseases. It is a credit to the Bureau as showing the energy and thoroughness with which its officers devote themselves to the elucidatIOn of the obscure diseases of farm stock, but we cannot say that a perusal of it has convinced us of the existence of Sc/rweine­seud!e on the American Continent. Indeed, the impression left is rather that many if not all of the alleged outbreaks of that disease were instances of swine fever. There has never been any doubt that hog cholera is identical with swine fever, and we must emphatically refuse to accept as correct Dr Smith's account of the morbid anatomy of that disease, but to set forth the reasons for this dissent would occupy more space than can be spared here. The Report is commendable alike for its lucidity and the temperate language in which it is couched in dealing with controversial points; and that is more than can be said of some of the literature on the same subject.

A Manual of Saddles and Sore Backs. By FRED SMITH, Professor in the Army Veterinary School, Aldershot.

Saddles and Saddlery-Bits and Bitting. By the same Author. Published by Gale & Polden, Aldershot.

PROFESSOR SJ\lITH'S filallual of Saddles and Sore Backs is an illustrated reprint of lectures delivered by him at the Army Veterinary School. The subject is, of course, treated from a military point of view, but the matter