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THE POPULAR SCIENCE MONTHLY.
somewhat narrow slits, and with lids which display many and deep longitudinal folds. The upper lid is set with longer and thicker eye-lashes than the lower. The dark eyes glow between the lids with a ferocious expression.
Fig. 1.—Aged Male Gorilla.
The bridge of the nose rises gradually outward, from between the inner corners of the eyes, and is keel-shaped in the center. This part of the head is from seventy to eighty millimetres in length, longer and narrower in one individual, shorter and wider in another. The skin in this region is covered with a net-work of wrinkles of varying size. The end of the nose and the nostrils are high, conical, and very wide
