American Notes by Charles Dickens

I WISH to abstain from instituting any comparison, or drawing any parallel whatever, between the social features of the United States and those of the British Possessions in Canada. For this reason, I shall confine myself to a very brief account of our journeyings in the latter territory.

But before I leave Niagara, I must advert to one disgusting circumstance which can hardly have escaped the observation of any decent traveller who has visited the Falls.