tchell (the most competent authority on the question
of hydrography), of the United States Coast Survey; B. B. Harrod,
the State Engineer of Louisiana; Jas. B. Eads, whose success with the
jetties at New Orleans is a warrant of his competency, and Judge Taylor,
of Indiana.

It would be presumption on the part of any single man, however skilled,
to contest the judgment of such a board as this.

The method of improvement proposed by the commission is at once in
accord with the results of engineering experience and with observations
of nature where meeting our wants. As in nature the growth of trees and
their proneness where undermined to fall across the slope and support
the bank secures at some points a fair depth of channel and some degree
of permanence, so in the project of the engineer the use of timber and
brush and the encouragement of forest growth are the main features. It
is proposed to reduce the width where excessive by brushwood dykes, at
first low, but raised higher and higher as the mud of the river settles
under their shelter, and finally slope them back at the angle upon which
willows will grow freely. In this work there are many details connected
with the forms of these shelter dykes, their arrangements so as to
present a series of settling basins, etc., a description of which would
only complicate the conception. Through the larger part of the river
works of contraction will not be required, but nearly all the banks
on the concave side of the beds must be held against the wear of the
stream, and much of the opposite banks defended at critical points.
The works having in view this conservative object may be generally
designated works of revetment; and these also will be largely of
brushwood, woven in continuous carpets, or twined into wire-netting.
This veneering process has been successfully employed on the Missouri
River; and in some cases they have so covered themselves with sediments,
and have become so overgrown with willows, that they may be regarded as
permanent. In securing these mats rubble-stone is to be used in small
quantities, and in some instances the dressed slope between high and low
river will have to be more or less paved with stone.

Any one who has been on the Rhine will have observed operations not
unlike those to which we have just referred; and, indeed, most of the
rivers of Europe flowing among their own alluvia have required similar
treatment in the interest of navigation and ag