National Geographic : 1922 Mar
From a painting by HERBERT PAUS. © ARCO. 1922. MASTERY To the god of fire the savage bowed down; he worshipped its comfort and dreaded its power. Each step in man's progress has been marked by an increased mastery over fire. Harnessed to engines it has learned to labor; imprisoned under boilers its destructive heat has been transmitted into health-giving warmth. In this drama of mastery the Labora tories of the American Radiator Com pany have played a vital part. Out of them has come a long procession of better boilers, culminating in the IDEAL TYPE A HEAT MACHINE. By this invention fire is made to work for human comfort more perfectly than fire has ever worked before. The master to whom the savage bowed has been completely mastered. AMERCAN oDITO COMPANY 104 West 42d Street, New York Dept. 55 816 So. Michigan Avenue, Chicago "Mention The Geographic-It identifies you"