"Are they strong, Uncle Philip?

"So strong, boys, that five men may stand on them; and it is a common thing for the wild bulls to get upon them and look out, while the rest of the herd are feeding below."

"Why, how high are they?"

"Oh, of different heights; some as many as five or six feet, others are twelve, and the largest are as high as twenty feet, and would easily hold a dozen men."

"And how large are the ants, Uncle Philip?"

"Not above a quarter of an inch high as they stand. Now, boys, just compare the size of one of these nests with the size of the ant that made it; and it is quite as large in proportion as the city of New-York is when compared to a man's size; yes, it is a great deal larger in proportion. These nests are sometimes five hundred times as high as the ants which build them: now suppose that men built their houses five hundred times as high as themselves, and as large at the foundation in proportion to their height, what monstrous buildings they would be! But let me go on. This outside shell, which I have been telling you how they make, is nothing but the wall of the city; the buildings are all inside of that."

"But, Uncle Philip, there is one thing I have been thinking of which would make it more like a city still. But I hardly think they can have that."

"What is it?"