(n6) 
fotneftones reputed to be 4/ that had moft lively Pift- 
ures, not only upon thcmjbut paffing t horow thdr whole 
fubftance, and thereupon finding an ^rti/ly (kilful to per- 
form fuch rare workmanfliip, did not only pronounce fuch 
ftones to be drtificial, but when that Artiji was unwilling to 
communicate onto him his Secret^ did joyn his ftudy and 
endeavors with tbofe of one Alhtrtus Gunter a Sdxon^ to find 
it but themfelves : wherein having fucceedcdj itfeems,they 
made the Experiments wh ch this Fnduftrious and communi- 
cative delivers in this manner ; 
The Colours, faith he, are thus prepared h I take of A" 
quajortis and Aqua Regis ^ two ounces am v of Sal Armomack^ 
one ounce 5 of the beft spirit of tVim^ two drachms^ as much 
Gold as^ can be had for nine 'julw s ( a '^uUo being about 
fix pence Englifli) of pure Silver^ two drachmcs. Thefe 
things being provided, let the Silver, when calcined, be 
put into a Vial 5 and having powred upon it the two 
drachmes of Aqua fortis^ let it evaporate , and you fhall 
have a Water yielding iSrH-a t/en? Golour, and artcrwards 
ai/4f^.Likewifc put the Gold, wfien calcin'd/into a Vial^ 
and having powred the Aqm Regis upon it, fet it by to eva - 
porate: then put the Spirit of Wim upon th6 Sal Armoniach^^ 
leaving it alfo till it be evaporated h and you will have a 
Golden coloured Water, which will afford you divers Co- 
lours. And, after this manner, you may cxtrafl: many T/»- 
Uures of Colours out of other Mettals» This done, you 
may, by the means of thefe two Waters, paint what Pi&ure 
you pleafeupon white Marble, of the fofttr kind , renew* 
ing the Figure every day for feveral days with fome frefli fu- 
peradded Liquor, and youfliall find ia time, that the f'i- 
fture hath penetrated the whole folidity of the Srone, fo that 
cutting it into as many parts asyoa will^ it will always repre- 
fcnt unto you the fame Figure on both fides. 
Sofdrhe^ which how far it anfv/ers expe(9:ation5 is referred 
to the Tryal of Ingenious Artrfts. In the mean time there 
are not wanting Experienced Men that fcruplothc EfFcft^ but 
yet 
