The leg of the gorilla from the knee to the ankle is almost the same in size. In the human leg there is what is called the “calf” of the leg, but in the apes this is very small. However, there is a tendency in the ape to develop that feature. In the human species the calf of the leg appears to belong to the higher types of men. As we descend from the highest races of mankind this characteristic decreases, and it almost disappears in the lowest savage. The pygmies and the bushmen have smaller calves than any other men. It is not to be inferred from this that apes would ever have this feature developed in them by their elevation to a higher plane. So long as they remain apes they will retain this characteristic, which is one of the distinctive features of their apehood. One thing which makes the calf appear smaller in the gorilla is the large size of the muscles about the ankle and the flexibility of that joint. Also the fact that the joint of the knee is larger in proportion to the leg makes it appear smaller than it really is. The corresponding parts of the arm are more like those of the human body. In a sitting posture the gorilla rests his body upon the ischial bones and sits with his legs extended or crossed. The chimpanzee usually squats, resting the ischial bones upon his heels. He sometimes sits, but more frequently he squats. When in either of these attitudes both kinds usually fold their arms across their breasts. The hair of the gorilla is irregular in growth. It is more dense than that of the chimpanzee, but less uniform in size and distribution. On the breast it is very sparse, while on the back it is dense and interspersed with long, coarse hairs. The hair on the arms is long and coarse. The ground color is black, but the extreme end of the hair is tipped with pale white. This is so even in early youth. With age the white encroaches, until in extreme age the animal becomes quite gray. The top of the head is covered with a growth of short hair. In certain specimens this crest is of a dark tan color. It looks almost like a wig. This mark seems to be peculiar to certain localities. It is uniform among those captured in the Ferran Vaz basin. A white trader living on Ferran Vaz Lake claims to have seen a gorilla which was perfectly white. It was said to have been seen on a plain near the lake in company with three or four others. It was thought to be an albino. In my opinion it was only a very aged specimen turned gray. A few of them have been secured that were almost white. It is not, however, such a shade of white as would be found in an animal whose normal color is white. I cannot vouch for the color of this ape seen on the plain, but there must have been something peculiar in it to attract attention among the natives. They regarded it as something very extraordinary.