DEPOSITION OF TARTAE UPON TEETH. 127 



to remove the mass now exhibited. Since its 

 removal, the general health of the child had im- 

 proved, and the parts were heaUng kindly by 

 granulation. The origin of the case was obscm'e, 

 and it was remarkable, from the absence of those 

 exciting causes which usually exist; there were 

 no carious and aching • teeth, and the child was 

 well fed, having animal food always once a day. 

 She was living in a room on the first floor, but 

 her person was very far from clean. 



A communication was read from Mr. Hutchins, respecting a " Large 

 Deposition of Tartar upon Teeth:" — 



"The subject is a girl 18 to 19 years of 

 age, who was sent to me the latter part of last 

 year by Dr. Henry Davies. Her mother, who 

 accompanied her, brought in her hand the mass 

 of tartar marked 1, and the girl was suffering 

 dreadfully from extensive ulceration at the frae- 

 nimi and reflected membrane under the tongue. 

 As this condition clearly arose from the irritation 

 caused by the projecting angles of the remaining 

 portions of tartar, I immediately removed the 

 piece marked 2, which indeed was quite loose, 

 and in succession that marked 3 : these came 

 away entire and with great ease. The portion 

 of plaster marked 4 represents another mass of 

 tartar, which, however, was firm : this was taken 

 away in smaller detachments, which are inclosed 

 in paper with the specimen. All the teeth of 



