This work is from the hands of a distinguished German author, and the translator has aimed to give an accurate but liberal impression of the author's ideas rather than to follow the German text too literally. Some little additions and omissions have been made, not, however, affecting the work as a whole, and, like the other works of this series, the illustrations are most elaborate and complete, and fill a useful place in our literature. These volumes, however, should always be supplemented, we think, by American works, as German authors do not as a rule refer to all that is done in this country that is of value. The practical character of the work is shown by the addition of a medical formulary.