Veins in the Mine of Hue I Peever. 145 



away 18 fathoms towards the north, and also that the tin vein was 

 18 fathoms further north between the western and the middle cross 

 vein than between the latter and the eastern cross vein. The 

 workings to the east of the latter are not exhibited in the longitu- 

 dinal section, in consequence of its being another mine called Old 

 Huel Peever. 



By the longitudinal section it will be seen that the downward 

 direction of the eastern cross vein x, towards the west, was 4 inches 

 in a fathom, the underlie of that 17 fathoms on the west of it at 

 the surface atj, was towards the west one foot and a half in a 

 fathom. The underlie of the cross course at the western extremity 

 of the mine z, was in opposition to the latter, being very little 

 towards the east, though nearly perpendicular. 



c c, d d, Represent the north and south slides intersecting the 

 tin vein, the former at 25 fathoms perpendicular from the surface 

 at the engine shaft, and the latter about 50 fathoms below. 9, 

 shews the situation of the shallow adit or water course, and 10, 

 the deep adit ; all the other horizontal lines represent the passages 

 or levels made by the miner in the search after tin, or for the con- 

 venience of his occupation. The dark parts of the longitudinal 

 section shew the places in which tin was found. 



PI. 7. fig. 3. 



