of Metals for refle&ing felef copes. 3 29 
The polifher being fixed down, and the camel’s-hair 
brufti, being firft wetted and rubbed a little over the foap, 
let every part of the tool be bruflied over therewith; 
then work the bruifer with fhort, ftraight, and round 
ffrokes, lightly upon the tool, and Continue to do fo, 
now and then turning it, till the poll fltc-r have a good face, 
and be fit for the metal. Then having fhakenupthe putty 
in the phial, and touched the polifher in five or fix places 
with the cork wetted with that and the water, place the 
bruifer upon the tool, and give a few ftrokes upon the 
putty to rub down any gritty particles; after which, 
having removed it, work the metal lightly upon the po- 
lifher round and round, carrying the edges of the fpecu- 
lum, however, not quite half an inch over the edge of 
the tool, and now and then with a crofs ftroke. 
The firft putty, and indeed all the fucceeding appli- 
cations of it, fhould be wrought with a con fider able 
while; for if time be not given for the putty to bed it- 
felf in the pitch, and any quantity of it lie loofe upon the 
polifher, it will accumulate into knobs, which will in- 
jure the figure of the metal : and therefore as often as ever 
fuch knobs arife, they muft be carefully fcraped off with 
the point of a penknife, and the loofe fluff taken away 
with the brufh. After the putty is well wrought into the 
pitch, fome more may be added in the fame manner, but 
Vol, LX VII. U u 
never 
