Excerpt from Ventilation and Warming of Buildings: Illustrated by Fifty-Four Plates, Exemplifying the Exhaustion Principle; To Which Is Added a Complete Description and Illustration of the Ventilation of Railway Carriages, for Both Winter and Summer I find it a pleasure, as well as a duty, to acknowledge my in debtedness to Mr. E. P. Hannaford, now of the Engineers' Department of the Grand Trunk Railway Company, for the principal part of my drawings, for the formationofwghichr he had nothing to go by except my description of what I wished to represent. Considering that he had nothing to work upon, or by, in the shape of precedent, and during the two years in which we were getting them up, I was con stantly interrupting him by alteratlons and improvements, these dia. 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.