Originally published in 1934, this book was written by the renowned British civil engineer Sir Charles Inglis (1875–1952), inventor of the Inglis Bridge and head of the Cambridge University Engineering Department from 1919 to 1943. The text presents a study of 'the dynamic effects in railway bridges, produced by the action of locomotives and other moving loads, and the determination of simple, yet scientific formulae, whereby these effects can be predicted with a reasonable degree of accuracy'. This book will be of value to anyone with an interest in railway bridges and the history of civil engineering.