Report of a Committee of the American Academy of Arts and Sciences on Ventilators and Chimney-Tops

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Excerpt from Report of a Committee of the American Academy of Arts and Sciences on Ventilators and Chimney-Tops: March, 1848Tn main object in conducting the following experiments has been, to investigate the principles upon which the successful action of ventila tors depends. By a knowledge of these principles, ingenious artisans will undoubtedly be enabled to construct forms much superior to any new in use. Incidentally, forms have been pointed out by the Com mittee as superior to any other they have submitted to experiment. These forms have since been examined in their working state, of full dimensions, and found in their comparative results to correspond with those obtained from the models. The experiments may therefore be considered as confirmed by practice.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.