C 407 ) 
And in Fig. n. the white Mundick being infe&ed 
with Iron, feems fo far from being affe&ed by a 
ftick Tower , that it concreted in the Form of Icicles 
from the Fluid which tranfuded thro’ the Top of the 
Mine. 
Fig . 1 3 . reprefents fome fmall Cubes of white or vi- 
triolick Mundick. 
But to return to the Mines : They are found to con- 
tain Tin, Lead, Copper, Iron, and a pfeudometallick 
Subftance, by the Miners term’d Glijl : For the Par- 
ticulars of all which, as they would vaftly fwell the 
Bulk of one Letter, I muft refer you to my next. 
I am , 
With the utmoji Refj>e£t % 
Tour obliged Friend , 
( ' 
Fran. Nicholls. 
s' 
