NATURAL HISTORY. 
we make the following extracts from an account of 
it published in the Philosophical Magazine, No. 17. 
“* The lode, to the depth at present explored, isa 
very regularly stratified one, of oxidulated iron ore 
and argillaceous schist, in alternate beds ; and is 
situated on the edge of the granite district, near the 
base of the Hightor rocks. The hill, on the brow 
of which, near the centre, it crops out, is imme- 
diately incumbent on the granite ; its principal slope 
is gradual and towards the East, the sides having 
a more precipitous descent to the North and South. 
It consists chiefly of micaceous, passing into clay 
schist, and of hornblend rock (provincially termed 
Ironstone) of a compact basaltic texture, and great 
specific gravity ; and mostly containing a propor- 
tion cf iron-ore, which occassionally runs in distinet 
threads and patches through small portions of it. 
The lode occurs in the clay schist, and the direction 
of its strata is nearly North-west and South-east, 
underlying to the North-east at an angle of 220 or 
23° only for the first few feet from the surface ; but 
below this the dip is very regular at an angle of 
45°, It consists of alternate beds of ore and schist 
varying in thickness from 6 inches to 3 or 4 feet ; 
the central bed being of iron-ore, and considerably 
the largest, it is S feet in thickness ; and the other 
alternating heds of schist and ore are disposed above 
and below it in a tolerably regular relative propor- 
tion. The schist having a tendency to contract in 
width, as the depth increases, and,the ore to approxi- 
mate each way towards the central bed, into which 
