Mr. Hitchins’s Account, Sec. 
*64 
EXPLANATION OF THE PLATE. 
Plate XI. represents the lodes of Herland and Prince George 
copper mines, on a plane parallel to the horizon, at one hun- 
dred and ten fathoms below the surface of the earth. 
This plan is drawn on a scale of one inch to seventy- two 
yards. 
The size of the lodes, and the distance of their heaves, are, 
for the -sake of distinctness, represented too large in proportion. 
The small black squares represent the shafts. 
