Book Shelf RESPIRATORY HAZARDS OF THE FIRE SERVICE, by William D. Cloudy, A.B., M.D. Published by the National Fire Protection Association, 60 Batterymarch Street, Boston 10, Mass.; 16 chapters; 138 pages; price $3.50. The author is widely known for his professional articles in fire service publications (including FIRE ENGINEERING) and his services with paid and volunteer fire departments in the District of Columbia. The book provides a general reference for respiratory problems encountered in fire fighting and in the treatment of fire casualties resulting from toxic agents. It delineates the toxic gases encountered in fire fighting and describes the types and uses of modern respiratory protective equipment. Included is a chapter on “Things to Come” and a lengthy bibliography.