New Trade Publications Received The following literature descriptive of up-to-date methods and equipment for water works and fire departments has just been issued for general distribution and can be procured by writing to the concern mentioned: Gilbert & Barker Manufacturing Company, Springfield, Mass.—The Vent” for December 1922. 16 pages and cover illustrated. De Laval Steam Turbine Company, Trenton, N. J.— “Catalog P, Plants and Products,” 24 pages and cover, illustrating and describing plant of the company and its products. Gamewell Fire Alarm Telegraph Company, Newton Upper Falls, Mass.—“Thirty Seconds Quicker,” 8-page circular in form of fire alarm box, with cutout of door to show interior of box. Circular describes method of operating box equipped with Gamewell quick action door. “Gamewell F. I. P. Battery with 15 Improvements,” 4-page descriptive pamphlet, illustrated. “Double The Electrical Protection,” 4-page circular descriptive of new porcelain steel peerless box, with illustrations.