( ) 
eefs of. But this it did by means of a fingular Inftrument^by 
him caU'd a PhilofophiulMil/^whok ftrudure is thus defcribed^ 
Tab.i. A* J Leaden Head pretty thick^ fame^ which is [quare, 
\ B. 'the Axis. C d. Utre both the Pejlles are 
C. An indented Drum, | affixed te the Axis, 
D. A Drum emf Jfwgof Ceggs,^. Here the Pefiles are firengt 
A Mortar^ thened by a [Irong Brajs-- 
V. fefiks, ring. 
G. A Handle^ by which theMill (.Here both PeJiUs are ftreng- 
is turnd. \ thend by two Brafs-cafes, 
a. The Superior part of theg. Both the thic\ pejlles of 
Axis^ which is round. | glajs. 
b. The Inferior part of the 
Follows the Operation it felf^ 
PutLeaf Gold^asrauchas youpleafe, cut very /mail, into 
a very thick Glafs- mortar, or into one of Gold, (fuch an one 
as the late King ol Denmark^ a little before his death^caufed to 
be madefor this operation :) In this Mortar, covered only 
with paper^left any duft or other thing (hould fall in, grind the 
faid gold night and day by an uninterrupted agitation of the 
Mill, till you fee it reduced into a duskifli colour. For which 
grinding there are commonly to be allowed 14 days and nights. 
But if you will only work by day, there will need a whole 
moneth. This done, put the powder into a Retort^ not very 
deep,but fhallow/uch as theEnglilh ones ufe to bejand drive it 
by a fire of fand by degrees^but at laft by a very ftrocg one^Sc 
there will come over a few but very red dropsjwhich being di^ 
gefted either per fe^ or with Tartarifed Spirit of Wioe, give you 
a true Aurum potabile^ which is fincere, and un-imbued with 
any forrain quahty. 
The Remainder though they could alfo have eaiily refolv'd 
by Grinding; yet tliey thought good to make an Extradi of it 
by means of their Philofophical ^^*^/»»;, made oiVerdigreafe, 
Sulphur^ and a highly rectified Spirit of Wine, by along dige- 
ftion : Whereby they got again a Tinfture fufficiently red and 
of very great virtue. And that little that remained^ which 
was but very littfc, they reduced into a body by the means of 
Borax ^ but it wanted its due weight, 
1 IS 
