Geographical Notices. 223 
Art. XXV.— Geographical Notices. No. XIX.” 
PHYSICAL GEOGRAPHY OF THE REPORT ON THE MISSISSIPPI 
RIVER, BY HUMPHREYS AND ABBOT, — 
THE report of Captain Humphreys and Lieut. Abbot of the 
Corps of Topographical Engineers of the United States Army, 
on the “Physics and Hydraulics of the Mississippi River,” has 
already been noticed in this J ournal, in an article which gave a 
Conspectus of the entire work.’ The universal interest now felt 
in everything which illustrates the Physical Geography of the 
United States, the importance of this elaborate survey of the 
tend to determine the most practicable plan for securing it from 
lundation, and the best modes of deepening the channels at 
the mouths of the river. The report, consequently, is chiefly 
Ities of navigation in the channels near the gulf. But the topo- 
. 
sult the work itself may turn here for such information. In 
doing this we shall confine ourselves, without comment, to the 
ments of the authors, generally employing their own lan- 
Stage. We regret that the limit of this article compels us to 
mit some of the interesting details which their scientific zeal 
and thoroughness have brought together. ; 
arding the true Mississippi river as beginning at the con- 
fluence of the Upper Mississippi and the Missouri, eight of its 
Utaries are so important as to be are arg ee from all the 
t. In the order of the magnitude of their basins, these are 
the Missouri, Ohio, Upper Mississippi, Arkansas, Red, White, 
Yazoo and St. Francis. They are described in the order of 
their geographical position, first the right bank and then the 
1 [2], xxxiii, 181. 
