188 

 the entire bulk of a projecting tooth. To supply 

 this desideratum was Mr. Gowing's object, and the 

 annexed wood-cut will, at a glance, convince the 

 reader that the requirement has been satisfactorily- 

 complied with. 



A long cylindrical tube, of sufficient stoutness to 

 afford the requisite strength, forms the handle of this 

 instrument, and being hollow, permits a chisel to 

 work freely within it. Indeed the chisel would work 

 too freely if some means were not employed to 

 steady it, therefore a large bulb, which is filled with 

 packing and constitutes a stuffing box, is fixed at one 

 end, and by pressing against the shaft of the chisel 

 prevents it from being too readily displaced ; though 

 at the same time it allows of the cutting agent being 

 propelled, with all the force that could be desired. 

 The bulb likewise serves another purpose, as it gives 

 the operator a firm grasp, and prevents the danger of 

 the hold being lost when the instrument is struck. 

 At the opposite end of the handle there is a frame, 

 the further part or base of which is sharp upon the 



