[ 8 1 ] 
cold, no good Impreflion can be taken. I ob- 
ferve the beft Time to be, juft after the Wax 
ceafes to work up, and have little Bubbles in ir. 
4. Take not the Impreflion on a Table, or 
any hard Body, without a Sheet or two of 
Paper, or, what is better, a woollen Cloth, 
underneath ; for that gives way to the PrefTure 
and Form of the Medal, which hard Bodies will 
not do. 
5. The Medal fhould be fqueezed down equally 
hard on every Side, and the Preflure continued 
till the Wax is near cold: For, if you lift up 
the Medal while the Wax remains hot, the 
riling Parts, being ftill foft, fink down, and 
become much lefs fharp. 
6 . The beft Paper for your wax Impreflions is 
white Pafteboard, Card-paper, or forrie other 
thick Paper. 
The Pi<fture6 may be coloured as everyone fanfies. 
I have done them in moft Colours, but think a Red 
the beft ; which was the Reafon I advifed the Im- 
preflion to be taken in black Wax; fince the Wax 
and Paint mu ft be of different Colours, or it will 
be impofiible to diftinguifh when the Colour is 
laid on properly, or rightly cleared away. There- 
fore, if the Pi&ures are chofen in Black and White, 
to referable Copper-Plates, the Wax muff not be 
black, but red. 
The red Colouring I ufe is a Mixture of Lake 
and Vermilion, which works off more kindly than 
either of them alone. 
L 
Gamboge 
