Show Economy Economy- In Smoke Prevention After Atter remarking that there c can n be no dope of the general adoption of means U- U prevent the fouling of the air all of ot great cities with factory smoke unless it can be demonstrated that tho the adoption adoption adoption tion of such means will result In the saving of ot money to the makers of ot the smoke Prof Proto J. J A. A Switzer of the Un of Tennessee records the result of experiments which ho be has made mads with smoke consumers based on on the principle of injecting with steam-Jets steam fresh air into the furnaces whenever fresh fuel Is la put upon the fires tires He finds that the claim that such apparatus Increases tho the efficiency of ot tho the boilers boll boil ers era by increasing the evaporation of the water is well founded and that there is a real economy In their use use use- Youths Youth's Companion I |