with three drams of fal ammoniac, which 
was coloured like the firft. The remain¬ 
ing wood-tin had loft only a few grains 
in weight, A folution of the fublimate 
In water was tinged blue by the phlogif- 
ticated alkali; the fixed alkali precipitated 
a little light grey not coherent powder, 
which appeared an impure calx of tin, 
•' * 
! 2 ’ 
Thefe experiments indeed fliew this 
foflil to be a calx of tin, united with a 
fmall portion of iron, fimilar to the com¬ 
mon tin-ftones : but to know the quanti¬ 
ty of metal contained to it, a reduction 
was neceflary. And as in a flaying tin 
ores the produce depends very much upon 
circumftances, the reduction of this ore 
was tried under the following variations; 
(a) Wood-tin, i dram, 
White glals, 2 drams, 
Calcined borax, 1 dram, 
powdered charcoal, iq grains. 
