Excerpt from The Stevens Indicator, Vol. 9: 1892 The rules and regulations laid down by the New England Insurance Companies regarding mill buildings and their equipment. Will give you better information in regard to fire risks than most text-books. Obedience to the building laws of insurance rules Minutes, as they are called in England, ) cannot be neglected. Bear in mind that ignorance of existing laws is considered no excuse for breaking them. Municipal authorities, for the protection of Citizens, are obliged to throw about their municipalities legal limits to what can be done to prevent one Citizen prejudicing the life, health, or comfort of others. What you can do legally must be familiar to everyone of you who aim to be mechanical engineers. You will find instances where large sums have been expended in doing quite innocently what, when done, has been found to be illegal. This has happened in electrical transmission, in steam and compressed air transmission and in many other engineering constructions. There are questions to be settled where speed is the controlling question in what can be done. In designing modes of transmission you will be called on to decide between high speed and light journal bearing pressure, or, greater load on the rubbing surfaces with slower motion of the parts in contact. Each problem must be worked out for itself; but I can assure you that you need not err if you refer to similar cases, or, better still, consult the authorities that have been text-books to you in your studies. Your professors have done more than most other teachers of mechanical engineers in clearing away many of the false ideas common in text-books in' relation to frictional resistance. 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.