THE GIBBON IS LOWER THAN THE OTHER APES AS REGARDS ITS
SKULL AND DENTITION, BUT IT IS HIGHLY SPECIALIZED IN THE
ADAPTATION OF ITS LIMBS TO ARBOREAL LIFE 166
Photo: New York Zoological Park.
THE ORANG HAS A HIGH ROUNDED SKULL AND A LONG FACE 166
Photo: New York Zoological Park.
COMPARISONS OF THE SKELETONS OF HORSE AND MAN 167
Photo: British Museum (Natural History).