Excerpt from Minutes of Proceedings of the Institution of Civil Engineers: Session 1863-64 The door leading from the light - room to the outer gallery is generally made to open outwards, which is inconvenient when it is blowing hard. In these lighthouses the door is made to slide, one half of one of the wide panels running on rollers behind the other half. Some careful workmanship is required to make the door air-tight when closed; but, on the whole, it is believed to be an improvement on the ordinary practice. 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.