A BtILL WITH Aff UPPER IKCISOR. 127 



great variety of shapes, and running in different direc- 

 tions. The teeth vary in size, some being very small, 

 while others are nearly as large as a permanent grinder. 

 Each tooth has a pulp cavity, and is composed of the 

 same substances as the natural teeth. Should their 

 removal be desirable, it will be necessary to trephine 

 the superior maxillary sinus and detach them with the 

 forceps." 



In the chapter entitled "The Pathology of the 

 Teeth" (the VIIL), Surgeons Bouley and Ferguson, 

 in the course of their memoir on horses' teeth, record 

 some important facts about supernumerary teeth. In 

 one animal the rows of grinders are said to appear 

 double. The facts are given in that particular chap- 

 ter in preference to the present one in order that the 

 memoir may have a connected reading. 



M. Roche Lubin gives the following account of a 

 tooth that he extracted from the upper jaw of a young 

 bull (" Le Zooi'atre du Midi," February, 1838) : 



" On the 14th of April, 1837, 1 was requested by M. 

 Bonhome, who lives near Rhodez, to extract a tooth 

 which was growing in the middle of the palate of his 

 young bull. The novelty of the thing made me hasten 

 to comply with his request. The animal being secured, 

 I removed the tooth in the usual way. A very consid- 

 erable hemorrhage followed its extraction, which was 

 performed with some difficulty on account of the tooth 

 being firmly implanted in the palatine arch. It was 

 situated at the middle of the median line, and was of 

 precisely the same character as that of the usual incisor 

 tooth of the ox. This is, I believe, the only case on 

 record, the incisor teeth being wanting in the upper 

 jaw of cattle." 



