William Jerome Harrison

“ Slowly and gradually do they descend the hill sides. On the very hill-tops the bare rock peeps forth, but the slopes are covered with a few inches of debris, over and through which the rain water courses, gradually abstracting the soluble part, the carbonate of lime, and mechanically "moving on" the other ingredients, until they arrive of the lowest point. ”

“ Here it accumulates. Most of it is clay, but there is some sand, and the whole is tinged red by the oxide of iron, which, by exposure to the air and water has been raised, if it were not previously in that condition, to the state of the hydrated peroxide. If we could measure the cubical contents of such a deposit, and also by analysis determine accurately the composition of the rock from which it was derived, we might obtain some interesting results as to the amount of denudation of the district in recent times. ”