15 
THE SLIDING TOOTH-CHISEL DIRECTOR. 
By W. Brown, M.R.C.V.S., Grafton Street, Fitzroy Square. 
On several occasions I have experienced considerable 
difficulty in applying Mr. Gowing's sliding tooth-chisel to 
the upper jaw for the removal of a projecting portion of a 
superior molar tooth. The instrument, so easily used on the 
lower teeth, tends to slip from its position when applied to 
the upper molars, unless the horse is cast and the head fixed 
in a convenient position. Desiring to avoid this unnecessary 
proceeding I made trial of several methods of holding the 
chisel firmly in its place, and at length succeeded in con¬ 
structing an apparatus which answers the purpose admirably. 
The drawing will indicate exactly the form of the instrument, 
which I propose to call the sliding tooth-chisel director, and 
its mode of application. y 
Fig. A indicates the portion of the chisel in the claw of the 
director when it is employed for the purpose of cutting off 
a projecting upper molar. 
The fig. b represents the director, which consists of a claw 
