Excerpt from Hints About Heating, Vol. 1 The principles that govern the proper distribution of heated air are few; but their application differs more or less in each specific case. Much experience and ingenuity are at times necessary in order to attain the best results. We shall defer, for the present, the discussion of such matters as relate to the production of heat, and shall first consider the mode of effecting a proper distribution of the warm air generated by a furnace. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.