This large reference book, which is similar in most respects to that just mentioned from the same press, gives, like the former, an exhaustive presentation of the subject matter. It is provided with a complete index of subjects and an exceptionally full index of authors. The illustrations, many of which are new, consist of diagrams, photomicrographs, roentgenograms and photographs of patients, instruments and methods of examination, as well as several pictures of the fundus in color. The first section, of thirty-seven pages, by Dr. W. Riese, of Lyons, is on the symptomatology of diseases of the olfactory nerve and of its cortical representation. The second section, of ninety-two pages, by Professor Marchesani, of Munich, treats in great detail of the symptomatology of diseases of the optic nerve. Next is a section of forty-three pages by Professor Jaensch, of Essen, on methods of examination of the optic functions. The following