How can so much electricity be collected in the clouds?
How can such quantities of vapor be accumulated?
It is very difficult to comprehend this.

However, such are the facts, and one might suppose himself transported to the extraordinary epochs of the diluvian period.
Fortunately, the ant-cone, with its thick walls, was perfectly impervious.

A beaver's hut, of well-beaten earth, could not have been more water-tight.

A torrent could have passed over it without a single drop of water filtering through its pores.
As soon as Dick Sand and his companions had taken possession of the cone they occupied themselves in examining its interior arrangement.
The lantern was lighted, and the ant-hill was sufficiently illuminated.

This cone, which measured twelve feet in height inside, was eleven feet wide, except in its upper part, which rounded in the form of a sugar loaf.