When Dr. Livingstone was travelling in Africa he was asked by some of the natives if in his country there was any "smoke which sounds." They assured him that such a thing existed in their neighborhood, although some of them did not seem to comprehend the nature of it. The Doctor soon understood that their remarks referred to a waterfall, and so he took a journey to it. When he came within five or six miles of the cataract, he saw five columns of smoke arising in the air; but when he reached the place he found that this was not smoke, but the vapor from a great fall in the river Zambesi.

These falls are very peculiar, because they plunge into a great abyss, not more than eighty feet wide, and over three hundred feet deep. Then the river turns and flows, for many miles, at the bottom of this vast crack in the earth. Dr. Livingstone thinks these falls are one of the wonders of the world.

There is no doubt, however, about the king of cataracts. That is Niagara. If you have seen it you can understand its grandeur, but you can never appreciate it from a written description. A picture will give you some idea of it, but not a perfect one, by any means.

FALLS OF ZAMBESI.

The Indians called these falls "thundering water," and it was an admirable title. The waters thunder over the great precipice, as they have done for thousands of years before we were born, and will continue to do thousands of years after we are dead.

The Falls of Niagara are divided by an island into two portions, called the Canadian and the American Falls. This island lies nearer to the United States shore than to that of Canada. Therefore the American Falls are the smallest. This island is named Goat Island, and you have a good view of it in the picture.