Dr. Eyre has subjected his work to a most searching revision. Indeed, so thorough was his revision that the entire book, enlarged by some 150 pages and 50 illustrations, had to be reset from cover to cover. He has included all the latest technic in every division of the subject. His thoroughness, his accuracy, his attention to detail make his work an important one. He gives clearly the technic for the bacteriologic examination of water, sewage, air, soil, milk and its products, meats, etc. And he gives you good technic--methods attested by his own large experience. To any one interested in this line of endeavor the new edition of Dr. Eyre's work is indispensable. The illustrations are as practical as the text. McFarland's Pathology ~A Text-Book of Pathology.~ By JOSEPH MCFARLAND, M. D., Professor of Pathology and Bacteriology in the Medico-Chirurgical College of Philadelphia. Octavo of 856 pages, with 437 illustrations, many in colors. Cloth, $5.00 net; Half Morocco, $6.50 net. ~THE NEW (2d) EDITION~ You cannot successfully treat disease unless you have a practical, _clinical_ knowledge of the pathologic changes produced by disease. For this purpose Dr. McFarland's work is well fitted. It was written with just such an end in view--to furnish a ready means of acquiring a thorough training in the subject, a training such as would be of daily help in your practice. For this edition every page has been gone over most carefully, correcting, omitting the obsolete, and adding the new. Some sections have been entirely rewritten. You will find it a book well worth consulting, for it is the work of an authority. ~St. Paul Medical Journal~ "It is safe to say that there are few who are better qualified to give a résumé of the modern views on this subject than McFarland. The subject-matter is thoroughly up to date." ~Boston Medical and Surgical Journal~ "It contains a great mass of well-classified facts. One of the best sections is that on the special pathology of the blood." * * * * * McFarland's Biology: Medical and General ~Biology: Medical and General~--By JOSEPH MCFARLAND, M. D., Professor of Pathology and Bacteriology in the Medico-Chirurgical College of Phila. 12mo, 457 pages, 160 illustrations. Cloth, $1.75 net. ~JUST READY--NEW (2d) EDITION~ This work is both a _general_ and _medical_ biology. The former because it discusses the peculiar nature and reactions of living substance generally; the latter because particular emphasis is laid on those subjects of special interest and value in the study and practice of medicine. The illustrations will be found of great assistance. ~Frederic P. Gorham, A. M.~, _Brown University_.