33 ° 
Of Tin, Lead, and Iron. Part III. 
colour of a Calcedony. Fen ant. Lmperato hath one which 
he entitles Ingemmamento di Piombo ; and feems to be like 
this. 
SPARKS of LEAD ORE in the Caulk. One of the 
Sparks is branched almoft like a frnall Leafe. The Stone or 
Caulks is a Congeries of white Cryflals of Spar laid crofs 
every way. They will cut Glafs. 
A large piece of LEAD ORE, flaky, and lying in fpots 
in a white perfpicuous, flaked, and foft Spar. 
Some other pieces of Lead Ore , Englijh. 
LEAD ORE, from Freiungen , called WEISSER FLIES. 
It conf ifteth of a foft and friable Spar, of a pale colour, near 
that of the Diaphanous natural Sulphur together with a 
rediih fubftance infermixt. 
LEAD ORE, from the fame place, called Schlicb. Tis 
a fine grey Sand, like that ufed tor Writings: with forne 
few black Grains; which is, I fuppofe, the true Ore. 
A large piece of LITHARGE ( of Silver.) 
See a large and accurate Account ot the Mendip Lead 
f f )Num.2S. y[i nes H the Phil. Tranfactions-, [a] communicated by 
& ' 9 ' Dr. Jof. Glanvile. 
Lead (befides the ufes commonly known) is alfo em¬ 
ployed for the Refining of Gold and Silver by the Cupel. 
Hereof is made common Cerufs with Vinegar. The way 
(b) Lib. de briefly, yet perfpicuoully fet down by Theophrafius. ( b ) Of 
Lap ' Cerujs , Red Lead. Of Plumbum uftum, the beft yellow Ochre. 
Of Lead and i as much Lin, Solder for Lead. Hereof are 
alfo made the like Chymical Preparations, as of other Me¬ 
tals, as the Oil, Tintiure, Salt , Ere. Some of which, many 
bold Chymifts , without Difcretion, give inwardly, and alfo 
extol them. But thofe that are careful of their Health, will 
beware of them. I do not deny, but that tis poflible this 
Metal, as well as Mercury, may be fo order’d and given, 
as to be innoxious. 
BRUSH-IRON, Native or from the Mine. It confiifeth 
of ftrait, round, long Styria, about the thicknefs of a frnall 
Kniting-Pin , bolt upright, like the Briftles ofafliff Brujh, 
or the Teeth of a Wooll-Comb. They grow on a double-Bed, 
the uppermoft of an Iron-colour, the undermoftof a dark 
yellowiih red. 
BRUSH ORE ; From Doward in Herefordjhire. Given 
by 
