OUR BEST FEATURES 



G 



B 



Fig. 72. Central Incisors of Gorilla (A, E) and Man (B, C, 



D, F). Enlarged. (B, after Weinert, C. F, after Virchow; 



D, AFTER Hrdlicka; G, from Hrdlicka, 



AFTER ZUCKERKANDL.) 



For details, see pp. xxix, xxx. 



Triassic age themselves had " triconodont " incisors 



but only triconodont molars. In whatever way 



this tendency to subdivide the central incisor 



137 



