Strains, Calculation of.

A HANDY BOOK FOR THE CALCULATION OF STRAINS IN GIRDERS AND SIMILAR STRUCTURES, AND THEIR STRENGTH. Consisting of Formulæ and Corresponding Diagrams, with numerous details for Practical Application, &c. By William Humber, A-M.Inst.C.E., &c. Fifth Edition. Crown 8vo, nearly 100 Woodcuts and 3 Plates, 7s. 6d. cloth.

"The formulae are neatly expressed, and the diagrams good."—Athenæum.

"We heartily commend this really handy book to our engineer and architect readers."—English Mechanic.

Barlow's Strength of Materials, enlarged by Humber.

A TREATISE ON THE STRENGTH OF MATERIALS: with Rules for Application in Architecture, the Construction of Suspension Bridges, Railways, &c. By Peter Barlow, F.R.S. A New Edition, Revised by his Sons, P. W. Barlow, F.R.S., and W. H. Barlow, F.R.S.; to which are added, Experiments by Hodgkinson, Fairbairn, and Kirkaldy; and Formulæ for Calculating Girders, &c. Arranged and Edited by Wm. Humber, A-M.Inst.C.E. Demy 8vo, 400 pp., with 19 large Plates and numerous Woodcuts, 18s. cloth.

"Valuable alike to the student, tyro, and the experienced practitioner, it will always rank future, as it has hitherto done, as the standard treatise on that particular subject."—Engineer.

"There is no greater authority than Barlow."—Building News.

"As a scientific work of the first class, it deserves a foremost place on the bookshelves of every civil engineer and practical mechanic."—English Mechanic.