' ' ■ ' ' ( 126) - ■ . 
feme (tones reputed to be natural that had moft lively- Pict- 
ures, not only upon them* but paffing thorow their whole 
fubftance, and thereupon finding an Artift, Ikilful to per- 
form fuch rare worknianftiip, did not only pronounce fuch 
Clones to be artificial, but when that Artjfi was unwilling to 
communicate unto him hi£ Seci-et, did joyn his ftudy and 
endeavors wuh thofe of one Albertus Gunter a Saxon, to find 
it out themfelves: wherein having fucceeded, it feeins,they 
made the Experiments wh ch this Induilrious and cornual- 
cative Jejui't delivers in this manner : 
The Colours, faith he, are thus prepared * I take of A- 
qttafortis and Aqua Regis, two ounces ana * of Sal Armomack^ 
one ounce * of the beft spirit of Wine, two drachms* as much 
Gold as can be had for nine 'Julio* s ( a ']ulio being about 
fix pence English) of pure silver, two drachmes. Thefe 
things being provided, let the Silver, when calcined, be 
put into a Vial* and having powred upon it the two 
drachmes of Aqua fortis, let it evaporate, and you fhajl 
have a Water yielding firft a blew Colour, and afterwards 
a black* Likewife put the Gold, when coin’d, into a Vial, 
and having powred the Aqua Regis upon it, fet it by to eva- 
porate: then put the Spirit sifWine upon the Sal Armomack 
leaving it a Ho till if be evaporated * and you will have a 
Golden coloured Water, which will afford you divers Co * 
lours. And, after this manner, vou may extra# many im- 
Uures of Colours out of other Metfals* This done, you 
may, by the means of thefe two Waters, painr what Pi&ure 
you peafe upon white Marble, of the f offer kind, renew 
ing he Figure every day for fevcral days with fome frefb fu- 
peradded Liquor, and you (hall find in time , that the Pi- 
fture hath penetrated the whole folidity of the Sone, fo that 
cutting it into as many parts as you will, it will al ways repre- 
fent unto you the fame Figure on both fides r 
So far h , which how far it anfwers expe&ation, is referred 
to tie Try al- -of Ingenious Artifts. In the mean time there 
are not wanting Experienced Men that fcruplethc H but 
.. k. they 
