44 °' Directions for taking off 
6. White Paftpboard, Card-Paper, or 
fome other thick Paper, is bed to take 
Wax Impreffions on. 
In Places where Copper-Plate Printer s 
Ink cannot be had, Water-Colours may be 
made life of. Lake and Vermilion mixfc 
make the mod: proper Red, Indian Ink the 
heft Black. Directions for other Colours 
may be feen, Phil. Pra-af. N° 472, p 821 
in an Account of this Invention laid by me 
before the Royal Society Anno 1744, from 
whence this is partly taken. 
There are indeed many other Ingenious 
Contrivances for taking off Medals, in Sul¬ 
phur, Plaider of Paris, Paper, &c. But fince 
a Mould mud: be formed for each of thefe, 
either of Clay, Horn, Plaifter of Paris, or 
fome other Materials, which requires a great 
deal of Trouble and Time to form, this Me-, 
thod I believe will be judged abundantly 
more convenient, efpecially as fome of thofe 
Ways do really a great deal of Injury to Me¬ 
dals, by impairing the Sharpnefs of their 
mod: delicate and expreffive Strokes. 
For Wax is always ready, and hurts not 
the fined: Medal: and however brittle it 
may be thought, the Moulds made thereof 
refid: the Force of downright Preffure, ai¬ 
med: as effectually as if they were made of 
Steel and might ferve to take off a thou¬ 
sand Impreflions, were they not apt to crack, 
gnd the Marks of thofe Cracks to render 
what 
