TEETH LIKE A CALF'S YOUKG HOKS. 123 



seen a tooth which grew from the petrous portion of 

 the temporal bone, like a young horn from the fore- 

 head of a calf. It formed a hard and seemingly very 

 painful tumor, which was ultimately opened, and the 

 bony substance, which proved to be an almost perfect 

 tooth, extracted. He had seen three or four similar 

 cases in which teeth had been thus produced. When 

 the dental arteries in a manner cease to act the teeth 

 having attained their full growth there was a singu- 

 lar predisposition in the neighboring arteries to take 

 on the same action, and teeth, more or less perfect, 

 were formed in parts altogether unconnected with den- 

 tition. In this case there were two, one on either side 

 of the forehead." 



Surgeon F. Denenbourg makes a detailed report in 

 "The Veterinarian" for 1869 (p. 533) of six cases of 

 dental cyst, five of which he operated on successfully. 

 The first case he treated was in 1837. He confesses 

 that he believed them to be mucous tumors till 1851, 

 when he found a molar tooth perfectly formed. This 

 tooth, which was deposited in an anatomical museum, 

 was as large as a pigeon's egg, and had three roots. 



Surgeon C. C. Grice, of New York, makes the fol- 

 lowing report ("Veterinarian," 1867, p. 392) : 



" Whether the case the facts of which I am about to 

 communicate will prove of sufficient interest to be pre- 

 sented to the notice of the veterinary profession, or 

 will add anything to the advancement of veterinary 

 pathology, I know not ; yet I would be glad to see it 

 inserted in our respectable old journal, ' The Veteri- 

 narian,' for I hold it to be the duty of every member 

 of the profession, to advance its interests to the best of 



