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: Grinnell Company, Providence, R. I.—Automatic Sprinkler Bulletin for July, 8 pages and cover, illustrated. The Pitometer Company, 25 Elm Street, New York City— “The Cole Pitometer System,” 16-page booklet, illustrated. American Fire Service Corporation, 347 Fifth Avenue, New York City—“To the Guardians of the Community,” 4-page folder, illustrated. United Electric Service Company, 26 Cortlandt Street, New York City—“Aero Automatic Fire Alarm” with sample of copper tube attached. Twelve-page booklet. Moore Trench Machine Company, Rockaway, N. J.— “Moore-Trench Conveying Machines, Digging Machines. Sheeting Derricks,” catalogue, 26 pages and cover, illustrated.