328 



Fig. 56. 

 Two and-a-Half Years Old. 

 // Horse "Firsts" developing. 



Fig. 57. 

 Threk, and a Half Years Old. 

 5 s llorse " Seconds " appearing. 



Fig. 58. — Four and-a-Half Years Old. 

 1 1 Horse " Thirds " appearing. 



Fig. 59. — Five Years Old. — Horse Teeth Developed. 

 ff "Firsts"; s* "Seconds"; tt 'Thirds. 



