114 MAN AND THE LOWER ANIMALS n 



molars ; m, molars. A line is drawn through the first molar of 

 Man, Gorilla, Cynocephalus, and Celus, and the grinding 

 surface of the second molar is shown in each, its anterior and 

 internal angle being just above the m of m 2 . 



lower jaw. Into this break in the series, in each 

 jaw, fits the canine of the opposite jaw ; the size of 

 the eye-tooth in the Gorilla being so great that it 

 projects, like a tusk, far beyond the general level 

 of the other teeth. The roots of the false molar 

 teeth of the Gorilla, again, are more complex 

 than in Man, and the proportional size of the 

 molars is different. The Gorilla has the crown 

 of the hindmost grinder of the lower jaw more 

 complex, and the order of eruption of the per- 

 manent teeth is different ; the permanent canines 

 making their appearance before the second and 

 third molars in Man, and after them in the Gorilla. 



Thus, while the teeth of the Gorilla closely 

 resemble those of Man in number, kind, and in 

 the general pattern of their crowns, they exhibit 

 marked differences from those of Man in secondary 

 respects, such as relative size, number of fangs, 

 and order of appearance. 



But, if the teeth of the Gorilla be compared 

 with those of an Ape, no further removed from it 

 than a Cynocephahcs, or Baboon, it will be found 

 that differences and resemblances of the same 

 order are easily observable ; but that many of the 

 points in which the Gorilla resembles Man are 

 those in which it differs from the Baboon ; while 



