Evening Republican, Volume 17, Number 273, Rensselaer, Jasper County, 14 November 1913 — Air Purification. [ARTICLE]

Air Purification.

Purification of the air ot great cities is a subject which oontlnnally attracts wider attention. Recently the commissioners of works In London, alarmed by the establishment el factories consuming thousands of tons ot coal a week, have asked Parliament to consider the matter. They reoofnlze, for the first time officially, says the Engineer, that the getting rid of black smoke would not suffice to oure /he trouble. Other products of com-. ■ bustion besides soot, such as sulphurous and sulphuric add anl solid mineral particles, are deleterious to vegetation, to buildings, to metal objects, and to the plcturee, marbles and other treasures contained in museums. The elimination of these impurities from the air Is an important part ot vie problem.