DIGESTION OP POOD. 



295 



6 years. 



7 years. 



8 years. 



10 years. 



IS years. 



14 years. 



wnbwm 



16 years. 18 years. 80 years. 



Fig. 245 (2) — Changes in incisor teeth of ox with age (Wilcljens). 



