Until now, its dynamic force has remained under restraint, and has only been able to produce a small amount of power." "Professor," said Captain Nemo, "my electricity is not everybody's.
You know what sea-water is composed of.

In a thousand grammes are found 96 1/2 per cent.

of water, and about 2 2/3 per cent.

of chloride of sodium; then, in a smaller quantity, chlorides of magnesium and of potassium, bromide of magnesium, sulphate of magnesia, sulphate and carbonate of lime.

You see, then, that chloride of sodium forms a large part of it.