midnight
Never was a summer night more calm to the eye , nor a gale of autumn louder to the ear . The rushing sound proceeds from the rapids , and the rattling of the casements is but an effect of the vibration of the whole house , shaken by the jar of the cataract . The noise of the rapids draws the attention from the true voice of Niagara , which is a dull , muffed thunder , resounding between the cliffs . I spent a wakeful hour at midnight , in distinguishing its reverberations , and rejoiced to find that my former awe and enthusiasm were reviving . Gradually , and after much contemplation , I came to know , by my own feelings , that Niagara is indeed a wonder of the world , and not the less wonderful , because time and thought must be employed in comprehending it . Casting aside all preconceived notions , and preparation to be dire-struck or delighted , the beholder must stand beside it in the simplicity of his heart , suffering the mighty scene to work its own impression . Night after night , I dreamed of it , and was gladdened every morning by the consciousness of a growing capacity to enjoy it .