110 
DOTTINGS ON THE ROADSIDE. [Chap. Till.—B. S. 
This narrow strip of land is traversed throughout 
its entire length by a ridge, varying in height above 
the general level of the ground at its base. At 
its eastern limit, which is the point where the vein 
is crossed by the Javali river, the elevation is very 
low, hut it increases towards the westward, so that at 
this end its height is more than 200 feet. Through 
the central line of this ridge runs the lode; in fact, 
the ridge is the lode itself, with a slight covering of 
earth and vegetable matter. This undulation, or rise, 
affords great convenience for driving levels on the 
lode far below any of the present old workings, and 
thereby giving great advantages for bringing the ore to 
the mills at any level desired. The workings are com¬ 
paratively superficial, save, perhaps, those of the So¬ 
corro, the bottom of which is 150 feet from the sur¬ 
face, consisting of 10 pozos and bancos. The advan¬ 
tages thus afforded for the cheap and complete drain¬ 
age and ventilation of the mine are very great. Such 
an elevation of the lode secures, in the most perfect 
manner, the complete drainage of all the works which 
can he carried on in this mine for many years to come. 
The ledge slopes from a point near its western limit 
462 feet above the water level, to the bed of the Javali 
river, at its eastern boundary. The lowest tunnel 
to he driven from this latter level would, of course, 
drain all the works above it, and keep them perfectly 
dry. A few hundred yards lower down the river there 
is another fall, of 160 feet, so that by driving a cross¬ 
cut from the foot of this fall into the Javali lode, 
which continues on the other side of the river in the 
