Then comes another gap; and then a line of more volcanos in Chili, at the foot of which happened that fearful earthquake of 1835 (besides many more) of which you will read some day in that noble book _The Voyage of the Beagle_; and so the line of dots runs down to the southernmost point of America.
What a line we have traced! Long enough to go round the world if it were straight.

A line of holes out of which steam, and heat, and cinders, and melted stones are rushing up, perpetually, in one place and another.

Now the holes in this line which are near each other have certainly something to do with each other.

For instance, when the earth shook the other day round the volcanos of Quito, it shook also round the volcanos of Peru, though they were 600 miles away.

And there are many stories of earthquakes being felt, or awful underground thunder heard, while volcanos were breaking out hundreds of miles away.