FIRE ENGINEERING A Consolidation of FIRE AND WATER ENGINEERING, THE FIRE ENGINEER and FIRE PROTECTION The Journal of the Fire Protection Profession Since 1877 Published the tenth of each month by CASE – SHEPPERD – MANN PUBLISHING CORPORATION Also publishers of “Water Works Engineering” and “Sewage Works Engineering” General Offices—24 West 40th Street, New York City, U. S. A. KARL M. MANN President 1. HERBERT CASE Vice-Pres, and General Manager SUBSCRIPTION PRICE U. S. and Canada, $2 a year; Foreign, $3; Single Copies, 25c. MEMBER Adult Bureau Circulation Associated Business Tapers ALFRED J. HOUGHTON. Eastern Representative; H. S. ESSEX, Production Manager. CHICAGO: N. Michigan Ave. W. S. CLEVENGER, L. M. ROCHE; SAN FRANCISCO: 444 Market ST.-CHARLES H. WOOLLEY. H. X. HARNER Contents of this issue copyrighted, 1940. by the Casc-Shcpperd-Mann Publishing Corporation.