TELEGRAPH CODES
New Business Code. 320 pp., narrow 8vo. (Size 4¾ in. by 7¾ in. and ½ in. thick, and weight 10 oz.) (New York, 1909.) £1 1s. net.
Miners’ and Smelters’ Code (formerly issued as the Master Telegraph Code). 448 pp., 8vo, limp leather, weight 14 oz. (New York, 1899.) £2 10s. net.
Billionaire Phrase Code, containing over two million sentences coded in single words. 56 pp., 8vo, leather. (New York, 1908.) 6s. 6d. net.
WARMING AND VENTILATION
Heat for Engineers. By C. R. Darling. Second edition, 110 illus., 430 pp., 8vo. (Finsbury Technical Manual.) (1912.) 12s. 6d. net.
Hot Water Supply. By F. Dye. Fifth edition, new impression, 48 illus., viii + 86 pp., 8vo. (1912.) 3s. net.
A Practical Treatise upon Steam Heating. By F. Dye. 129 illus., 246 pp., 8vo. (1901.) 10s. net.