. Guide leaflet. used. It retains in themain the leading characters of the skeletons of the older fossil mammals. This formhas five-toed grasping hands and feet, by means of which it climbs about in the has retained a relatively low type of skull, teeth and brains. In the Seventh Stage we come to a form that lies near the lower limits of the orderof Primates. These were thoroughly adapted for life in the trees but they had muchlarger eyes and bigger brains than any of the preceding stages. The Eighth Stage is represented by the skeleton of the gibbon, an east Asiatic apewhich is a tre
. Guide leaflet. used. It retains in themain the leading characters of the skeletons of the older fossil mammals. This formhas five-toed grasping hands and feet, by means of which it climbs about in the has retained a relatively low type of skull, teeth and brains. In the Seventh Stage we come to a form that lies near the lower limits of the orderof Primates. These were thoroughly adapted for life in the trees but they had muchlarger eyes and bigger brains than any of the preceding stages. The Eighth Stage is represented by the skeleton of the gibbon, an east Asiatic apewhich is a tree-living descendant of the first family of the tail-less or man-like on the ground he is the only existing man-ape which normally walks on hishind legs. His skeleton begins to be almost human in many ways but his arms areexcessively long. The Ninth Stage is represented by our distant cousins the gorilla (below) andchimpanzee (above). These apes retain the essential characters of the fossil apes of [29]. Stage 9Chimpanzee and Gorilla Stage 10Man Fig. 8C. THE TWO FINAL STAGES FROM FISH TO MAN. (On the ground again, and attainment of erect posture) India and South Africa, some of which in turn approached quite near to the oldestknown fossil men. The ape brain is much more developed than the brains of loweranimals and ape intelligence at times is almost human. In the Tenth Stage we see that the human skeleton is built upon the same generalplan as those of the chimpanzee, gorilla and gibbon, but that in man the backbone,pelvis and limbs are modified to enable him to walk on his hind legs and to use hisforelegs as arms and hands rather than as supports. His brain is much larger and morehighly developed than in the apes. THE UPRIGHT POSTURE AND ITS MAINTENANCE (Case IVA) From fish to man there is still a chain of living forms, in spite of all the devastationand wholesale extinction of the present and past ages. As the skeleton of man testifiesto his derivation from lower for
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
