About fifty-five years ago I commenced the study of anatomy by examining the bones by sight, then, by the sense of touch alone, endeavoring to determine to which side of the body each belonged, afterward dissecting the cadaver and learning the names of the parts without reading the text. Later drawings were made from plates found in books, as well as from the subject. In this manner a familiarity with the structure was easily acquired. The names, unusual and frequently those of persons and things without reference to the functions of the parts, required much effort to learn and were difficult to retain in the memory. This difficulty was more apparent when the study of the anatomy of the nervous system was reached, on account of the fact that little was known of the relation of the nerve centers and their connecting tracts, and consequently of their functions.