A. Four-year-old Pony (female).

1, 2, 3, 4, 5, 6. Permanent molars. 7, 8, 9, 10, 11, 12. Crowns of permanent molars. 13, 14. Central and lateral permanent incisor. 15. Corner temporary incisor.

B. Five-year-old New Forest Pony (female).

1, 2, 3, 4, 5, 6. Permanent molars.

7, 8, 9, 10, 11, 12. Crowns of permanent molars.

13, 14, 15. Central, lateral, and corner incisors.

DENTITION OF THE HORSE AT VARIOUS AGES IV.

Plate LXVI. DENTITION OF THE HORSE AT VARIOUS AGES-IV.

A. Four-year-old Pony (female). B. Five-year-old New Forest Pony (female).