"We cordially recommend this book to those engaged in considering the details of all kinds of iron and steel works."—Naval Science.

Elementary Mechanics.

CONDENSED MECHANICS. A Selection of Formulæ, Rules, Tables, and Data for the Use of Engineering Students, Science Classes, &c. In Accordance with the Requirements of the Science and Art Department. By W. G. Crawford Hughes, A.M.I.C.E. Crown 8vo, 2s. 6d. cloth.

"The book is well fitted for those who are either confronted with practical problems in their work, or are preparing for examination and wish to refresh their knowledge by going through their formulæ again."—Marine Engineer.

"It is well arranged, and meets the wants of those for whom it is intended."—Railway News.

Steam.

THE SAFE USE OF STEAM. Containing Rules for Unprofessional Steam-users. By an Engineer. Sixth Edition. Sewed, 6d.

"If steam-users would but learn this little book by heart, boiler explosions would become sensations by their rarity."—English Mechanic.

Warming.

HEATING BY HOT WATER: with Information and Suggestions on the best Methods of Heating Public, Private and Horticultural Buildings. By Walter Jones. Second Edition. With 96 Illustrations. Crown 8vo, 2s. 6d. net.