A List of Minerals and Organic Remains: Of. 
ring in the Canadas, which has been read before the Lyce- 
um of Natural History of New-York. 
From this list I have scrupulously rejected all minerals 
of doubtful character, and have never adverted to locali- 
ties which have been already announced; without some 
purpose evident in the context. 
With respect to fossils, I wish this communication to be 
considered as a transient notice, to assist temporarily in 
the study of the secondary formations of North-America. 
Allthe substances here mentioned, have been examin- 
ed by the geologists of this country, and of Europe, and 
are to be found in their cabinets. 
In the plurality of cases, for obvious reasons, I shall 
avoid a detail of mineral characters, and confine myself to 
rapid sketches of geological relations. 
Beryl.—Rainy Lake, two hundred and thirty miles north 
from Lake Superior. I found only two specimens, the 
largest of which is one quarter of an inch long, and one 
sixteenth of aninch broad, in a well characterized six sided 
prism, translucent, pale green; imbedded in porphyritic 
granite, in which a brown feldspar is predominant, the 
mica being black and scanty. It occurs on the east side 
of the lake, subordinate to vast tracts of gneiss, which runs 
E. N. E. and changes in places, by insensible degrees, 
into mica-slate, chloritic and greenstone slate, and sienite. 
This lake is two hundred and ninety-four miles round, as 
measured by circumnavigating it from point to point only, 
of the successive bays. 
Schorl.—In the Lake of the Thousand Islands, below 
Kingston, in Upper Canada; north-east coast of Lake 
Huron, in two distant places; Cape Tourment, thirty 
miles below Quebec, Malbay, &c. Lower Canada: velvet 
black, opaque—in six and nine sided prisms, usually small, 
but rarely ten inches in length, and one and an half inches 
in breadth—sometimes curved. It abounds in fragments 
in the puddingstone of the Thousand Islands, interposed 
between gneiss and horizontal limestone. 
The most remarkable deposit with which I am acquaint- 
ed, is on Yeo’s Island, one of the Thousand Islands, near 
the upper end of 'l'ar Island, and on the south side of the 
English channel. Yeo’s Island (about three hundred yards 
