6 2 MIN ERALOGICAL 
(b) The filtred folution, of a brownifli 
colour, was only imperfectly faturated 
with fixed vegetable alkali. The preci¬ 
pitate of a whitifh, approaching to a 
yellow-ochre colour, was feparated by 
the filtre, and weighed when dry five 
drams fifteen grains. It contained iron 
and arfenic: mixed with powdered char¬ 
coal, and heated, the arfenic fublimed 
in thick vapors, and left the iron. 
(c) This folution, the arfenic and iron 
having been feparated, was of a pale red 
colourj and was now completely fatu¬ 
rated by the fixed vegetable alkali. The 
precipitated calx of cobalt was of a red- 
difh grey colour, and weighed when 
x 
edulcorated and dried one dram fifteen 
grains, 
§. 2 ® 
I 
* k 
(a) One ounce of finely pulverized 
cobalt-ore was calcined in an earthen 
‘ vefiel 
