TEN MONTHS. 



63 



Fig. 52. 



Ten Months (Figs. 50, 51, 52). — These jaws come from a pony which 

 was rather tard}' in marking its age ; nevertheless, they are useful plates 

 from which to study the diverse characters of this period. The pinchers 

 and intermediate teeth are entirel}^ free from the gum ; the anterior face 

 of these teeth is polished, the little striations or canals are less visible; 

 the intermediate teeth, which have been in contact for some months, are 

 worn on both borders. The corner teeth are just appearing, but are not 

 yet in contact with each other. The wearing of the pincher teeth is 

 greater than that of the intermediate teeth. 



