90 VE TERINA R Y DEN TAL SURGER Y. 



gan, offered a mare four years old for operation, pre- 

 senting the following symptoms: The animal was 

 much emaciated, had a parrot mouth, the upper jaw 

 extending one inch beyond the lower jaw. Inferior 

 incisors and molars sound and perfectly formed. 

 The upper, central and lateral incisors were denuded 

 on their labial surface, the whole of the enamel hav- 

 ing been removed from the outer surface of the cen- 

 tral pair. On examination the molars of the upper 

 jaw were found to have assumed a like condition, 

 there being but one of them that appeared sound 

 (the first right upper). Their external surfaces were 

 partially or wholly denuded, and in some instances 

 the whole table surface was absent. The affected 

 teeth were very sensitive when tapped with the for- 

 ceps or mallet. The animal either refused all hard 

 food or ate very sparingly. 



My attention was next directed to a full brother 

 of the mare, but two years older. A parrot mouth 

 of about the same appearance was noticed. The 

 incisor teeth of the upper jaw were dark, and showed 

 signs of disintegration, and undoubtedly will soon 

 become denuded. The lower incisors and all the 

 molar teeth were of abnormal appearance. 



On inquiring into the history of the dam of these 

 horses, the owner informed me that the same condi- 

 tion was present, and that her teeth had been defec- 

 tive for some time. 



