The spectacular structures of today, such as large suspension bridges, are the result of scientific principles established during the new iron age of the nineteenth century. The book is concerned with a detailed and critical account of the development and application of those principles (including statics and elasticity) by people of remarkable talent in applied mathematics and engineering. They were, of course, mainly motivated by the demands of the railway, construction boom. Among the outstanding examples chosen by the author is Robert Stephenson's use of novel principles for the design...