OF THE UNITED STATES. 25 
junction of the Kiameska 3 and Dr. Pitcher, of the United 
States’ army, now at Fort Gibson, has politely obtained 
specimens for my use, among which I readily identify 
the Gryphzxa vomer, Exogyra costata &e. 
MISSOURI. 
Messrs. Lewis and Clarke, Mr. Nuttall and Col. Long, 
found Baculites, Gryphza and other marl fossils at the 
Great Bend of the Missouri river, (lat. 43° 40’ N., long. 
72° W. from Washington,) intimating the existence of 
the Ferruginous sand in that remote region of our conti- 
nent, as mentioned ona former occasion. In fact, a great 
part of the level country between the Rocky mountains 
and the Mississippi is occupied by this formation ; and I 
have also seen some fossils from thence, which bear a 
strong affinity to those of the Lias of Europe. 
D 
