north to latitude 0 deg., a journey of 2650 miles.

This gives for the water a speed of fifty-one miles a day, or 2.1 miles an hour.

The rate of progression is remarkably uniform, and this abets the deduction as to assisted transference.

But the fact is more unnatural yet.

The growth pays no regard to the equator, but proceeds across it as if it did not exist into the planet's other hemisphere.