OUR FACE FROM FISH TO MAN 



the upper and lower jaws; and in the milk set, two 

 incisors, one canine and two milk molars on either 

 side above and below (Fig. 76). 



The history of the human upper and lower 

 premolar and molar teeth (Figs. 77, 78) has been 



Two milk incisors 

 upppr 



lower 

 canine 



twomilKmolars B 

 lower 



Fig. 76. Milk Teeth of Man (A) and Gorilla (B). (Both from 

 Selenka, after Rose.) 



discussed at length by myself in the work on the 

 Origin and Evolution of the Human Dentition and 

 other papers and by Gregory and Hellman in 

 our work on The Dentition of Dryopithecus and 

 the Origin of Man. We have shown that not- 

 withstanding the present profound differences in 

 habits between man and the anthropoid apes, the 

 lower molar teeth, especially of more primitive 



and more ancient races of man, retain the most 



146 



