Excerpt from Journal of the Association of Engineering Societies, Vol. 5: Boston, St. Louis, Chicago, Cleveland, Minneapolis, St. Paul Some knowledge of the immense size the marine engine has reached may be obtained from the fact that an engine built in England a short time ago had a steam cylinder for reversing thirty-two inches in diame ter. It is by means of these improvements only that engines of ten and t welve thousand horse-power can be controlled The largest com pound on the lakes at the present time is 35 inches high and 70 inches low-pressure cylinder by 48 inches stroke and one as small as 8 inches high and 14 inches low-pressure cylinders by 12-inch stroke, and works as com plete as the larger engines. Vt'hen comparing engines of the lake marine with those built by English and Scotch builders and those on the coast, a vast difference is found in the weight and strength of engines of the same size. Those on the lakes are much the lighter - in fact, they are built. On the banjo principle. While the others are built on the anvil principle one is strong and massive, while the other is light and graceful, but. Begins to spring when heavy work is thrown on it. Some builders lay claims to making the working parts of their engines of steel to reduce the weight. This is a mistake. Stiffness is of more importance. If the crank shaft springs and heats, it is little satisfaction to know that it is. Made of steel. A piston or connecting-rod that trembles is a continual source of annoyance, and any amount of assurance that they are of steel will not satisfy the engineer that they are safe. The engines were orig inally designed to work with 50 and 60 pounds of steam, and at the present time are using a steam pressure of 100 pounds without one. Pound additional weight in the engines. The board of experts on the trial of the United State dispatch boat Dolphin reported that when it was attempted to work the engines to their full power, streams of water had to be run on the journals continually. It does not take very much spring in a shaft 10 inches in diameter with journal 11} diameters long to seriously affect its alignment. And when a power of 500 horse-power is exerted every time the crank passes the centre, there must not be any lack of material at the proper place to keep things from springing. It would seem when an engine showed signs of distress, that there would be danger of something giving way. There is danger, no doubt; but the moment any weakness is discovered by the engineer, every care is taken to favor that particular place. And the engine may run for years without a serious break-down. The banjo principle in some classes of construction is a good one, but nothing short of the anvil principle should be permitted in marine engines. 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 work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Contains the transactions of various engineering societies.

Excerpt from Journal of the Association of Engineering Societies, Vol. 5: Boston, St. Louis, Chicago, Cleveland, Minneapolis, St. Paul The Louisville Cements; Thos. D. Miller; Frogs and Switches; George T. Sampson; Hillside Drainage; John L. Culley; Engineering and Mechanical Problems in Cook's Stove Construction; Jos. Leon Gobeille; A Glance at the Engineers' Work, Past and Future; Robert Moore; Tables for Calculation of End Areas; W. W. Redfield; Comparative Size of Metric and Old Units, with Reference to Convenience; Fred. Brooks; The Theory of the Ammonia Refrigerator; Prof. C. M. Woodward; Pile Driving; E. H. Beckler; Cremation of Garbage; John Zellweger; The Work of the United States Testing Machine at Watertown Arsenal; J. E. Howard; Report of the Committee on Weights and Measures (Boston Society); The Efficiency of a Pipe System for Furnishing Water to Fire Engines; S. Bent Russell; Beacon Street Reservoir - Lowell Water-Works; George E. Evans; Smoke Prevention; Committee Report to Chancellor of Washington University; Railroad Washouts; Charles W. Folsom; The Seventh Street Improvement Arches; W. A. Truesdell; President's Annual Address - Cleveland Club; J. F. Holloway; Organization of a Surveying Party; Augustine W. Wright; Tests of Power of Locomotives; C. H. Hudson; The Metre as Applied to Land Surveying; J. D. Varney; A Revised Time-Table for Lighting Public Lamps; Julius M. Howells; Kutter's Formula and its Application to Circular Sewers; Robt. Moore and Julius Baier; A Design for a Stadia Rod; G. A. M. Liljencrantz; Edward B. Talcott - Memoir; Willard S. Pope; Notes on the Panama Canal; Charles D. Jameson; Gen. J. H. Devereux - Memorial Resolutions; James S. Lawrence - Memoir 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.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.