Excerpt from Tall Chimney Construction: A Practical Treatise on the Construction of Tall Chimney Shafts, Containing Details of Upwards of Eighty Existing Mill, Engine-House, Brick Works, Cement Works, and Other Chimneys in England, America and the Continent A chimney Shaft, when in work, contains a tall column of heated air, which, being lighter than the outside atmosphere, is forced upward by a corresponding column of atmospheric air pressing into the entrance of the furnace thus a displacement of hot air is constantly being effected, and its place filled by normal air forcing itself through the furnace of the boiler, which air is in its turn heated and displaced. The column of atmospheric air and the column of rarefied air in the chimney are somewhat like a pair of. Scales, or the two ends of a lever of which the boiler is the fulcrum. 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.

This book has been considered by academicians and scholars of great significance and value to literature. This forms a part of the knowledge base for future generations. So that the book is never forgotten we have represented this book in a print format as the same form as it was originally first published. Hence any marks or annotations seen are left intentionally to preserve its true nature.

The proceedings of second conference of the Construction History Society, which took place on 20 and 21 March 2015 at Queens' College, Cambridge, featuring 28 peer-reviewed papers covering a wide variety of subjects on the theme of construction history.