INTRODUCTION.

The purport of the following paper is to show that corrosion of its

banks and deposition of sediment constitute the legitimate business of

a river. If the bed of the Mississippi were of adamant, and its

drainage slopes were armored with chilled steel, its current would do

just what it has been doing in past ages--wear them away, and fill the

Gulf of Mexico with the detritus.

Many thoughts were suggested by Mr. S.C. Clemens, erstwhile a

Mississippi pilot, and by Mr. D.A. Curtis. Both of these gentlemen

_know_ the river.

Scientific American Supplement, No. 810, July 11, 1891 · 第 40 / 56 题