Schooleraft on the Copper of Lake Superior. 43 
It is probable that upon an accurate investigation the coun- 
try between the Alleghanies and the Atlantic will be found 
to consist of eight or ten distinct formations, agreeing pre- 
cisely in their general character with the newer strata in 
England and France. The fossil shells from the various 
beds would not, perhaps, all be exactly like those of Eu- 
from many of these various strata, preserve their angles 
and sharp tender edges unbroken; the skeletons of fishes 
and animals which are found, are many of them entire: 
they must have heen deposited at the bottom of a tranquil 
ocean. 
It may be said that a knowledge of these strata is of no 
use, but not only is it desirable to pursue science to its far- 
thest bounds, but it will be found that a knowledge of these 
png nr ee 
rin strata are found mate rials necess or the pot- 
ter. glass-maker, builder, &c. ‘They are the reposi ed 
for clay, sand, pyrites, ochre, fuller’s earth, &c. ; and when 
the boundaries of the various formations are accurately de- 
termined, it will be known where we can expect to find 
these different substances. 
Geology will achieve a triumph in America, when the 
term alluvial shall be banished from her Geological Essays, 
or confined to its legitimate domain, and then her tertiary 
formations will be seen to coincide with those of Europe, 
and the formations of London, Paris and the Isle of Wight, 
will find kindred associations in Virginia, the Carolinas, 
ia, the Floridas, and Louisiana. 
Ant. Ifl.—Notice of a recently discovered copper mine on 
Lake Superior, with several other localities of minerals ; 
by H, R. Scnoovcrart. 
Sault Ste. Marie, July 29th, 1823. 
_ Dear Sir.—I transmit to you, through the Secretary of 
War whose permission I solicit to have it published in the 
American Journal of Science, a copy of a letter which I 
have addressed to him, announcing the discovery of a vein 
