Chimpanzee
2 of the 7 encyclopedias on this shelf carry an entry for Chimpanzee. Both are reproduced below, so you can see where they agree and where they differ.
Aiton's Encyclopedia (1910)
a manlike ape of equatorial Africa. Its arms are long; the hind toe acts like a thumb. It is smaller and more active than a gorilla. It usually walks on all fours with its fingers doubled under the palm of the hand, but by grasping its thighs with its hands, also walks erect, the most nearly so of all apes. The skin is yellow and is clothed with shining black hair which hangs at a considerable length about the head and shoulders. The chimpanzee is fitted for climbing. Its natural food consists of fruit and birds' eggs. The female brings forth its young on a rude platform of sticks put together in a lofty tree-top and abandoned as soon as the young is able to accompany its parent. The chimpanzee feeds chiefly at night, and is dreaded by planters, whose banana plantations are likely to be ruined by the nocturnal visits of these destructive animals. It is the most human of all apes. It can be taught in captivity to eat with a knife and fork and to perform many tricks requiring, not only powers of imitation, but intelligence and judgment. See Gorilla ; Orang-Utan; Monkey
Collier's New Encyclopedia (1921)
a name formerly applied to more than one of the larger man shaped apes, but properly belonging to the Troglodytes niger , a native of the equatorial parts of western Africa. Its associate in the genus troglodytes is the gorilla. The face is nearly hairless, the skin a dirty yellow ochre , teeth beautifully white, hair black and long. In the chimpanzee the arms are longer than the hind limbs, and when the animal is erect they reach below the knee. They are not, however, proportionately so long as in the gibbons and orangs. Its height is about five feet. The look is very much that of a very old child. In habits it is of Central Asia. In form it approaches to a square, and it covers a surface, including dependencies, of nearly 4,000,000 square miles. It is inhabited by at least 325,000,000 of the human race, living CHIMPANZEE gentle and amiable, and easily makes under the same government, ruled by the friends.