Perhaps the most valuable specimen for scientific use that has ever been in captivity is Johanna, who belongs to the same gentleman. The history that is given of her, however, is hardly to be taken in full faith. Her age cannot be determined with certainty, but it is said that she is about thirteen years old. I have reason to doubt that, although I cannot positively deny it. Whatever may be her exact age, it is certain that she has now reached a complete adult state. She has grown to be quite as large as Chico was at the time of his death. She is not of amiable temper, but is much less vicious than he was. She has some of the marks of a kulu-kamba. In order to justify my doubts upon the subject of Johanna’s age, I may state that Chico was hardly ten years of age when he died, but he had reached the adult period; and as males of any genus of the primates do not reach that state sooner than the females, it is not probable, since he was mature at ten, that she was not so until twelve. In the next place, her captors claim to have seen her within a few hours after her birth, and state that they watched her and her mother from time to time until she was one year old. Then they killed the mother and captured the babe. The claim is absurd. These apes are nomadic in habit and are rarely ever seen twice in the same place. They claim that she was born on January 19, but, from what I know of these apes, I conclude that is not their season of bearing. I doubt if any of them _were_ ever born during that month. Again, it is claimed that she was captured by Portuguese explorers in the Congo, but the Portuguese do not possess along that river any territory in which these apes are ever found. They claim the territory around Kabinda, which would indicate that she came from the Loango valley instead of the Congo; but the cupidity of the average Portuguese would never allow anything to go at liberty for a year if it could be sold before that time. Johanna is accredited with a great deal of intelligence, but I do not regard her as being above the average of her race. Since the death of her companion, Chico, she has received the sole attention of her keeper, and since that time has been taught a few things which are neither marvelous nor difficult. In point of intellect she cannot be regarded as an extraordinary specimen of her tribe. I do not mean to detract from her reputation, but I have failed to discover in her any high order of mental qualities.