Read it through once

It is remarkable that the visionary propensity I have mentioned is not confined to the native inhabitants of the valley, but is unconsciously imbibed by every one who resides there for a time. However wide awake they may have been before they entered that sleepy region, they are sure, in a little time, to inhale the witching influence of the air, and begin to grow imaginative, to dream dreams, and see apparitions.