Lubricating oils are troubling her now quite as much as diminishing supplies of gasolene.
To get copper for munitions of war she can produce within her own borders 90,000,000 pounds.

Of late years she has been importing from America 300,000,000 pounds per annum, so that electrification has been going on for many years all over Germany, and copper wires in telegraph-postoffice work scintillate in the skyline of the German cities.

These can come down and be replaced with iron or aluminum.

Of course, the first wires to come down will be the power-transmission wires.

They can readily be replaced with aluminum, of which Germany is the parent producer.