CONTENTS, 
XX13C 
G* With fulphur and zinc 
i/. Wi^h fulphur and lead. 
Potter* s lead ore 
I. With fulphur and anti 
mony J 
K, With fulphur and iron 
Zr. With the acid of common fait. 
II 
SECT, 
CLXXV. 
CLXXVI. 
CLXXXL 
Horn filver ore^ , CLXXVIL 
C, Platina del pinto CLXXIX, 
Tin — CLXXX. 
1. In form of calx 
A, Indurated 
1. Mixed with the calx of^ 
arfenic 
a. Solid. Tin-^one 
b, Criftallifed. Tin grains 
2. Mixed with the calx of 
iron 
3. Mixed with manganefe.^ 
Wolfram 
2. Mineralifed by fulphur with 
iron. Black lead 
E, Lead — « 
1. In form of calx 
A* Pure 
1. Friable. Lead ochre 
2. Indurated, Lead fpar, 
B. Mixed j 
1. With calx of arfenic t 
2. With a calcareous earth 3 
2. Mineralifed 1 
With fulphur. [ CLXXXVIL 
lead ore j 
B, With fulphurated filver CLXXXVIIL 
C, With fulphurated iron and 
filver CLXXXIX. 
D, With fulphurated filver and 
antimony. Antimoniated 
lead ore 
Copper — * — — 
1. Native 
2. In form of calx 
A. Pure 
1. Friable. Copper ochres 
>CLXXXII. 
CLXXXIV, 
CLXXXV. 
CLXXXVI 
1 
cxc. 
CXCIL 
CXCIII. 
CXCIV, 
2. Indu« 
