PREPARED BY J.S. NEWBERRY M.D. GroLocist To {HE EXPEDITION, 
109° 30 
S ~under the direction of the 
Office of Explorations and Surveys 
- A.A.HUMPHREYS ,CAP? TOP! ENG’ IN CHARGE. 
36 30 
HON. JOHN B.FLOYD SECRETARY OF WAR. 
3 dese. ; | 
drawn by Frh’ F.W.y, Bgloffstein. 
Topographer to the Expedition. — 
Seale of 12 Miles to one Inch or 1:160320. 
o & i0 cr rg 
s+. Line of Exploration 
n 2: i 
* Astronomical Station 
Teuling by Samuel Sartain. 
SILURIAN aw DEVONIAN, [2 7oed voncantc 
