2*6 French Plate. [Book VI. 



by a water wheel, till it is of a certain thicknefs ; it is 

 afterwards rolled by hand rollers to a greater or leis 

 extent, according to the ufe for which it is intended ; 

 the thinned is applied to the lining of drinking hams. 

 An ounce of filver is often rolled out into a furface of 

 about three fquare feet, and its thicknefs is about ihe 

 three thoufandth part of an inch j and hence we need 

 not wonder at the filver being foon worn off from the 

 fharp angler, of plated copper, when it is rolled to fo 

 great an extent. 



* What is commonly called French plate is not to 

 be confounded with the plated copper. In making 

 French plate, copper, or, more commonly, brafs, is 

 heated to a certain degree, and filver leaf is applied 

 upon the heated metal, to which it adheres, by being 

 rubbed with a proper burnifher*. 1 



Watfoa's Chemical 



ivs. 



