USEFUL INFORMATION FOR ENGINEERS CONTAINING EXPERIMENTAL RESEARCHES ON THE COLLAPSE OF BOILER FLUES AND THE STRENGTH OF MATERIALS, AND LECTURES ON POPULAR EDUCATION AND VARIOUS SUBJECTS BUILDING, THE PROPERTIES OF STEAM, ETC. BY WILLIAM FAIRBAIRN, LL.D. F.R.S. Corresponding Member of the National Institute of France, Chevalier of the Legion of Honour, SECOND SERIES LONDON LONGMAN, GREEN, LONGMAN, AND ROBERTS ΤΟ MAJOR-GENERAL EDWARD SA R.A., D.C.L., F.R.S., F.L.S. HON. MEM. CAM. PHIL. SOC., ORD. BORUSS. 'Pour le Mérite' EQ. ET ACADD. IMP. Sc. PETROP., BRUX., NORV., ETC. This Second Series of Lectures is Inso BY THE AUTHOR AS A MARK OF PERSONAL ESTEEM AND AS A TESTIMONY TO HIS EMINENT SCIENTIFIC ATTA DISTINGUISHED SERVICES IN THE PROMOTION AND EXTENSION OF USEFUL KNOWI PREFACEЕ. THE great success which has attended the issue of the first series of Lectures, under the title of Useful Information for Engineers, has induced me to publish the present volume, in which will be found various original papers not before printed, or not easily accessible to ordinary readers. In the discourse on the education of working men, I have shown what a wide field is still open for talent combined with industry and perseverance in the attainment of distinction in science and art. I have not hesitated to encourage the young aspirant to prepare himself by mental culture and vigorous exertion for the realisation of an honourable name in the voyage of life. To awake an honest ambition, and to render sensible latent talents, were the objects of various addresses delivered from time to time in various Institutes, and I flatter myself that the reader will not blame me for seeking to give a wider circulation and a more permanent value to such an attempt than was possible in an oral lecture. I hope that in stimulating working men to cultivate their powers to the highest point of development, I have not ventured beyond professional duty, and that the reader will sympathise with |