Geographical Notes. 825 
extended from Nashville first to the river’s mouth; afterwards 
from Nashville to the falls of the Cumberland. 
The length of the river from the falls to the mouth is 595 
miles. The following altitudes are of interest : 
Foot of Falls, 770°70 above mean tide at Mobile. 
Laurel River, 685°70 
Smith’s Shoals— 
Point Burnside, 7 
State Line, 502°50 
Nashville, 365 
River Mouth, 286 
A minute report of the character of the river, and of the 
resources of the region, is given. 
. A preliminary survey, under the same officer of Engineers, 
has been made of the Wabash river, from Wabash to its mouth, 
by Mr. F. Stien of Tipton, Ind. 
3, An examination has also been made of the French Broad 
rwer, by Lieut. M. B. Adams, U. S. Eng. 
4. A route has been surveyed for a ship-canal between 
Hennepin on the Illinois river, and Rock Island on the Mis- 
Sissippi, via Geneseo, showing a length for such a canal of 65 
miles, with a navigable feeder from Dixon of 38 miles. The 
estimated cost of a ship-canal 160 feet wide and 7 feet deep is 
$12,500,000; and for a commercial canal 60 feet wide and 6 
= ~~ $3,900,000. 
h fic Coast, river surveys more or less 10 detail 
‘ve been made in various regions ; including the Willamette, 
H. ty, by Maj. R. S. Williamson and Lieut. W 
"Sener; the Umpqua; and portions of the Sacramento, 
