Mineralogy, Geology, &c. 47 
The cause of the transparency and purity of these waters 
is obvious. With the exception of small quantities of trans- 
ition — stone, its shores, as far as we saw them, are com- 
primitive rocks, made up principally of siliceous 
and falise very firm and insoluble materials. The streams 
by which the lake is fed, flow over similar substances, and 
pens waves find nothing to dissolve or to hold mechanically 
nded. Clay, which abounds around the head waters 
of the contiguous lake (Champlain) and renders them tur- 
bid, scarcely exists here. It is remarkable however, that 
as we approach Lake Champlain, in thd vicinity of Ticon-_ 
deroga, the waters of Lake George become, for a few miles, 
presse 2e tarbid, as near the efflux they are very much so — 
pis mineral app z ea to aby d ‘inthe p — 
at ane rediene t of Caldwell oat Emery had d been deinen 
down the lake, and was used considerably for polishing, 
grinding, &c. We obtained some of this mineral from a 
promontory called Anthony’s Nose,* a few miles south of 
Ticonderoga, and nearly opposite to Rogers’ Rock. Itisa 
andsome and very well characterized hoematite ; it is com- 
pact, lamellar, fibrous, mamillary, botryoidal, &e. present 
far less 
than the brown and black varieties. ‘The colour and pow- 
der of this hematite are bright red. The people -wersam- 
willing to admit that it was not emery, since it 
grinds, but this is well known to be a property of hematite 
as well as of other forms of the oxid of iron. The hema- 
tite of Lake George may very 2 Po answer for blood 
stones; so much. used:in polishing gilded ‘but tons, &e. > 
Flesh red Feldspar and compact Epidote. —These mine- 
rals we observed on the western shore of Lake George, eight 
miles from Ticonderoga. The felspar was in very large 
plates in granite, and the epidote in loose stones : the epidote 
was of a very imtense yellow, like that of chrome, but with 
youshes 
* boatmen called this is mountain’ Tony’s Nose, and the mineralozic al 
traveller must enquire for the Emery in Tony's pees this beinz the style 
of the boatmen, who will of course be his g 
