Read it through once

Helena occupies one of the prettiest situations on the Mississippi. Her perch is the last, the southernmost group of hills which one sees on that side of the river. In its normal condition it is a pretty town; but the flood (or possibly the seepage) had lately been ravaging it; whole streets of houses had been invaded by the muddy water, and the outsides of the buildings were still belted with a broad stain extending upwards from the foundations. Stranded and discarded scows lay all about; plank sidewalks on stilts four feet high were still standing; the board sidewalks on the ground level were loose and ruinous,--a couple of men trotting along them could make a blind man think a cavalry charge was coming; everywhere the mud was black and deep, and in many places malarious pools of stagnant water were standing. A Mississippi inundation is the next most wasting and desolating infliction to a fire.