. Outlines of zoology. Zoology. 732 MAMMALIA. with the hands reaching the ground. The skull is not prolonged into a vertical crest. There is an os centrale in the carpus. The hallux is well developed. They are the highest apes with hints of ischial callos- ities. They are mainly arboreal in their habits. They feed on fruits, leaves, shoots, eggs, young birds, spiders, and insects. Their voice is powerful. As regards teeth, the gibbons are most like man. The Orangs (Simla) live in swampy forests in Sumatra and Borneo. The males measure over 4 ft. They walk on their knuckles and on the outer edg
. Outlines of zoology. Zoology. 732 MAMMALIA. with the hands reaching the ground. The skull is not prolonged into a vertical crest. There is an os centrale in the carpus. The hallux is well developed. They are the highest apes with hints of ischial callos- ities. They are mainly arboreal in their habits. They feed on fruits, leaves, shoots, eggs, young birds, spiders, and insects. Their voice is powerful. As regards teeth, the gibbons are most like man. The Orangs (Simla) live in swampy forests in Sumatra and Borneo. The males measure over 4 ft. They walk on their knuckles and on the outer edges of the feet. The skull is prolonged into a vertical crest. There are but slight supra-orbital ridges. The canines are very. Fig. -Skull of gorilla.—From Edinburgh Museum of Science and Art. large. There are twelve ribs as in man, and sixteen dorso-lumbar vertebra. The larynx is connected with two large sacs which unite ventrally. There are no ischial callosities. They are arboreal in their habits, and make nests in the branches. They are exclusively vege- tarian. As regards the structure of the brain, the Orangs are most like man. The Gorillas (Gorilla) live in Western Equatorial Africa. They are larger than all other apes, and larger than man, though not over 54 ft. in height. The arms reach to the middle of the lower leg, and "the animals walk with the backs of their closed hands and the flat soles of their feet on the ground. The skull is not prolonged into a vertical. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Thomson, J. Arthur (John Arthur), 1861-1933. Edinburgh, Glasgow and London, H. Frowde and Hodder & Stoughton
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Keywords: ., bookauthorth, bookcentury1800, bookdecade1890, booksubjectzoology
