20 Hydraulics of the Mississippi River. 
hension of the Mississippi. The correctness of this view is, we — 
think, fully established by the Report before us; of which we 
will now attempt to present a succinct analysis. 
The properly hydraulic portion of the Report commences with 
a concise exhibit of the existing state of hydraulic science, 
including an exhaustive catalogue of the writers who have 
treated of the subject. This is followed by an elaborate detail 
of tlie operations of the survey, both in the field and in the 
the complications and uncertainties which 
these particulars would introduce must be — 
sige 
