a ee ee TT 
On the Quicksilver mine of Santa Barbara, Peru. 5 
different character from the gneiss constituting He. summit, 
The home of these gneiss pebbles is not known to 
It will be seen from this survey of the alate ae fot the 
Green Mountains, that they, present in every instance, where 
an examination has been had, decisive marks of glacial action 
around their extreme summits. The conclusion follows that 
those summits have been enveloped by glacial ice, which must 
have been in each case either the beginning of a elaci ier descend- 
ing from the summit, or else a part of an extended ice mass, 
moving over the entire surrounding country. Against the 
former gta might be adduced the form of these moun- 
pee CT while abru rupt pr A face southward and east- 
ward, more conclusive on this point is the presence of . 
i. Jengea on the summit of Killington Peak, which 
have had their origin in remote beds at a lower level. 
Art. II.—WNotes on the Quicksilver Mine of Santa Barbara, in 
Peru. Condensed froma MSS. Report made to the New ‘Al- 
maden Quicksilver Co., by C. E. Haw ey, 
Tus mine, which has been worked since 1570, is situated on 
a bold promontory or Farallon in the summit of the range about 
- 1200 feet above and on the south side of the river Huancave- 
lica, The strata containing the cinnabar rise almost vertically 
from the eae being light-colored sandstone, with occasional 
nae 
oe of h-gray limestone. The metalliferous stratum 
great loss.» The present condition of the mine is de- 
plonbi owing Esancipally to the reckless ayaa of the last 
_ who robbed the mine of every pillar, and like his pre- 
ecessor made no new works to open fresh bodies of ore. In 
St Domingo de Cochapata, in the sales of the mine, over 
one hundred Indians were buried at one time. 
In 1681 the ore which fell in the “«labores” of the San ee 
cinto, and was afterward extracted, produced four shoud ee 
flasks of quicksilver. The crush in 1786 from the — x 
