OF CORNWALL. 269 
lode; g, North-houfe fhaft; h, Little North-houfe fhaft ; i, P en - 
helic-houfe fhaft ; k, water-whim fhaft ; /, Huel-dudnans bottoms; 
the north lode is marked a a a, and dotted, the fouth lode is diftin- 
guifhed by perpendicular lines ; thefe lodes joining at a, keep con- 
tiguous from a to d\ then feparate, and are of different widths as 
they advance to the eaft, and of different diffances from each other, 
as in the plan. The reft o! this figure the letters inferted in the 
different parts of the ichnography will beft explain in the fequeJ. 
In Fig. 1. which gives the fecftion of thefe lodes, the height of SEC T xii 
the fouth lode is known by the crooked line of ffngle dotts at L Z, Progrefs of 
the different riffngs of the north lode are marked with a lift of dou- the works ‘ 
ble dotts or points at M m . There being a very hopeful difcovery 
made at L L Z, and no getting at the riches by reafon of the 
water ; the adit, I, I, I, twenty fathoms deep, was driven up to the 
lode from the weft, and having the two lodes in the fhaft A at L N, 
they work with little expence down to the adit I ; but finding the 
lode ftill rich, they fink on it down to I P a, fearching the lode to 
the eaft and weft as they defcend, and bringing away the ore from 
drift under drift at dd d, where the men work in Jlopes , that is, 
in feveral degrees or fteps one above another; the figures 1, 3, 
4, fliew the mafs of ore L N, 4, almoft exhaufted in this man- 
ner, by twelve men working out the lode in twelve ftopes, at 5, 6, 
7, 8. The miners finding the lode to hold the ore no deeper 
than P a, drive to the eaftward, fearching the bottom carefully, 
till, coming to P d, they find the ore there to deepen, and purfiie 
it to the depth of P b ; then drive and fink alternately as the lode 
gives encouragement, which in this mine was generally to the eaft- 
ward ; but P e fhews that the lode was at that time rich to the weft, 
which occafioned their purfuing it by that recefs. Whilft one party 
or tinnCiS was thus engaged in the bottoms, the chief miners (called 
Captains) took the bearing of the lode with a well-approved needle 
(which they call dialling the ground), and funk another fhaft at B, 
as more convenient for getting at the lode at Z, and neceffary to give 
air to the workmen, and draw the water, lode, and deads from the 
workings below at P b ; and fometimes there are three fhafts or 
f n °rc finking on the lode at one time. Whilft the fhaft B is defend- 
ing to P b , the bottoms are carried forward in a ftep-like manner, 
wherefoever the lode invites, and the water permits. It will occur 
to the intelligent reader, that the fifliire being cleared of fo much 
ore, many vacancies in the mine muft enfue ; in thefe vacancies by 
putting timbers crofs the fiffure like beams, and laying planks of 
Thefe lodes were of copper and very rich, but the way of working tin and copper-lodes in equal 
Cl rcumftances is the fame. 
X X 
fir 
