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THE POPULAR SCIENCE MONTHLY. 



these fangs, we find, just as we did before, that there is a greater dif- 

 ference here between the man-apes and the lower monkeys than be- 

 tween the man-apes and man. The canines are either much more de- 

 veloped or there is a change in the total number of teeth indicative of 

 a greater departure from the human type of dentition. 



You will remember that I called attention to the fact that through- 

 out the animal kingdom we were to find the greatest changes in the 

 structure of the extremities of the limbs, because these were brought 



Fig. 3. IIands and Feet of Apes and Monkeys: 1, 2, Gorilla; 3-6, Tschejro; 7, 8, Chimpanzee; 

 9, 10, Orangoutang; 1113, Gibbon; 14, 15, Colobus ; 16-18, Malbrook; 19, 20, Baboon; 21, 22, 

 Silk Monkey. (After Brehm.) 



into constant use against the immediate surroundings of the animal. 

 In truth, the greatest differences between the gorilla and man are found 

 in the feet. The hands are not very unlike a man's ; every bone and 

 muscle is here again in its place ; the thumb is a little shorter and the 

 whole hand heavier. The muscles of the arm are more powerful and 

 the hand is used for coarser work than man's, but after all not for work 

 very different in kind. With them the gorilla builds a nest to sleep in, 

 breaks off boughs, handles its food, and also attacks its enemy, holding 

 him fast so that it can bite him. We do all these things with our hands ; 

 and there is a legal term, mayhem, to denote the crime of mutilation 



