The main pipes would run to England, Ireland, and Scotland, where they would subdivide rapidly until they formed a network two feet deep under the whole country.

A pipe at distances of a yard would suffice for every purpose." "I am afraid," suggested Robert, "that the water which left the Isle of Man warm might lose a little of its virtue before it reached Caithness, for example." "There need not be any difficulty there.

Every few miles a furnace might be arranged to keep up the temperature.

These are a few of my plans for the future, Robert, and I shall want the co-operation of disinterested men like yourself in all of them.

But how brightly the sun shines, and how sweet the countryside looks! The world is very beautiful, and I should like to leave it happier than I found it.