In this laboratory manual, the author gives only that method which practical experience indicates is to be preferred. He does not discuss the value of laboratory methods but simply gives the method concisely. He does not furnish a bibliography. The general subjects taken up are those found in most laboratory manuals, beginning with blood counting and ending with histologic technic. The Rohdenburg manual seems to pay especial attention to directions for making up laboratory reagents in connection with the laboratory work concerned. The book is of handy size and the pages on the right are left blank for the taking of notes.