During this time I paid a few visits to another little monkey of the same species. Her name was Jennie. Her master had warned me in advance that she was not well disposed towards strangers. At my request he had her chained in a small side yard, which he forbade any of the family entering. On approaching the little lady for the first time, I gave her the usual salutation, which she responded to and seemed to understand. I sat down by her side and fed her from my hands. She viewed me with evident interest and curiosity. I studied her with equal interest. During the process of this mutual investigation a negro girl, who lived with the family, stealthily entered the yard and came up within a few feet of us. I determined to sacrifice this girl upon the altar of science. Placing her between the monkey and myself, I vigorously sounded the “alarm” or “warning.” Jennie flew into a fury. I continued to sound the alarm and at the same time pretended to attack the girl with a club and some paper wads. The purpose was to make the monkey believe that the girl had uttered the alarm and made the assault. With a great display of violence I drove the girl from the yard. For days afterward she could not feed or approach the little simian. This further confirmed the opinion as to the meaning of this sound. This sound can be fairly imitated by placing the back of the hand gently on the mouth and kissing it with great force, prolonging the sound. This imitation, however, is indifferent, but the quality of the sound is especially noticeable when analyzed on the phonograph. The pitch corresponds to the highest “F” sharp on a piano, while the word “drink” is about two octaves lower, and the word “food” is nearly three.