HEAT THE SOURCE OF ALL POWER.

From heat comes all power. When the latent forces of Nature were first set aflame by primitive man he touched the spring of civilization. Since that time fire has been working for human progress. It is one of the most powerful agents in the development of civilization.

Our rude ancestors long ago discovered its great utility, and they cudgeled their brains to aid the flame of fire and obtain a still fiercer heat. The bellows was the result—the wind pointed the way to this invention.

Then followed by slow degrees the acquirement of further knowledge concerning fire and its uses. Our forefathers learned the processes of melting and smelting—later were established various metallurgical operations.

The path was thus prepared for Tubal Cain and other artificers in metals. Man eventually became exceedingly skilled in applying heat forces in his many requirements in articles of brass, tin, zinc, steel, etc.