A Text=Book upon the Pathogenic Bacteria, for Students of Medicine and Physicians.

This book, which is well illustrated and carefully printed, is an excellent one; indeed, we can not too strongly commend it. The description of the methods of study of the pathogenic bacteria are set forth with such clearness that even the beginner may feel less reluctance to commence the study of a branch of medical science which has hitherto been considered as a bugbear on account of the difficult technique. There is a vast amount of information, and yet the work is not bulky and there is no mere padding. We might criticise some of the inaccuracies in the historical introductory, but they are not material, as the work is in itself so useful and generally worthy of commendation. In the first place Redi's books, "Generationem Insectorum," "De Ave Diomedea," "Experimenta circa varias Res Naturales," were published in one 18mo volume, Amsterdam, in 1686. The "experimenta naturalia" were made in