98 
The analysis by Dr. Kidd gave 
Oxide of Zinc . 66 
Sulphure atm 3S 
This gentleman also found a Platinum crucible rendered 
fusible by it ; we suppose, in consequence of the great 
quantity of Sulphur which it contains. 
Huel-Unity and one or two other mines in Cornwall 
have lately produced this substance. 
The Oxide of Zinc, tab. 202, lower figure, is somewhat 
like the above; but we do not suspect it of containing any 
notable proportion of Sulphur, if any. 
