Show economy in smoke prevention after remarking that there can be no ope nope ut out the general ral loptien of means tit t prevent the abe fouling ol of theair the air 0 I 1 great cities with factory smoke anle as it con car be demonstrated that the ad adoption op of such means will in the saving of money to the makers of too the smoke moke pro prof J A switzer of the un university I 1 ver sity of tennessee record the result of experiments which be has made mada with smoke amoka consumers based on the principle of injecting with steam jeta jets fresh air into the furnaces whenever fresh fuel Is put the area II 11 ile finds that the claim that such ampara increases tho the efficiency of the hot boll ers er by increasing the evaporation ol of the water Is well founded and tt that there Is a re real co 11 oin 7 in ii their usa youths youtha companion |