Fast III. Of cSAdetaif. 
3 2 3 
SAND out of a River near Conimbria , in which there 
are fome few fparks of GOLD. Together with a Knob 
of Gold fus'd out of it. Given by Sir Robert Southwell. 
Gold hath the lead variety of regular figure, in the Ore, 
of any Metal.Becaufe,more folid,and therefore, lefs wanton, 
than the reft. ’Tis a rare Specimen, mention’d by Georgius 
de Sepibus , (a) which he calls Aurirn Ramefcens. The 
Ductility of Gold is admirable: one Grain, in Leaves, is 
extended to above fifty inches fquare: and one ounce em¬ 
ploy’d in gilding fmall Hair-Wyre, will be extended to al- 
moft an i oo miles in length 3 as Mr. Boyle hath obfcrv’d.(L) 
TheUfesof Gold for Veffels, Coins, Armour, Garments, 
&c. are infinite. The Luxury of Galienus the Emperour, 
taught him to powder his Hair with the Duft of Gold. 
Some Painters , faith Ambrofinus , (r) hang plated Gold over 
Vinegar , whereby is produced a pure Blew (as Cerufs out of 
Lead) which they prefer before the Vltr amarine. Of the 
Art of Refining, fee the Phil. TranfaPlions, (d) 
Chymically manag’d,it is reduced to feveral forms,called 
Aurum Potabile, Aurum fulminaus , A. Vitae 3 as alfo, Anri 
Calx , Crocus, Sal, Sulphur, Tinclura, Oleum, Vitriolum, Flos : 
of which fee Libavius , Crollius , Schroder , and others. One 
principal ufe of Gold in Medicine is, for tfee Correction 
of Mercurial Medicines. The original ufe of Leaf-Gold in 
Electuaries , and divers other Preparations, was not only for 
better grace, but from the opinion of its adding Virtue to 
them. And Plates of Gold, anciently, have been us’d, efpe- 
cially for Children, as an Amulet. Which I take to be the 
truereafon, why the Kings of England hang a piece of Gold 
upon thofe they Touch. 
Pure SILVER, naturally BRAINCHED in the Mine. 
From a Silver-Mine in Suecia. Some of the Branches are 
blackilh being tarniihed; the reft of a clear filver colour. 
Some pieces of a white Spar, diffoluble with Spirit of Nitre, 
flick to them. 
A piece of CAPILLARY SILVER, or with fmaller 
Branches, alfo from the Mine: whith a kind of white 
Rhombick Spar growing to it. Ferranti Imperato & AT 
drovandus, (e) both give an Example of this kind. 
PLATED-SILVER from the Mine. Argentum nativum 
Bracieatum. It lies in thin Plates, of a clear filver colour, 
T t 2 between 
(a) MuC 
Roman. 
(b) Of Ef- 
fluv. p.13. & 
14. 
(c) Aldrov. 
MuC Met. 
(d) N. 142. 
Communi¬ 
cated by 
Dr. Chrift, 
Merret. 
(e) Muf. 
Met. 
