Issue 1 and Volume 72.

QUESTIONS AND ANSWERS “He that questioneth much shall learn much ”-BACON NOTE-READERS of FIRE AND WATER ENGINEERING are invited to send in questions, which will be answered in the order in which they are received. Names are omitted from questions unless otherwise specified. Cities Prohibiting Wood Shingle To the Editor: Could you give me a list of the cities in this country which have ordinances prohibiting the use of wooden shingles within corporate limits? If not, could you tell me where such a list could be secured? Awaiting your advice, 1 am Respectfully yours, Philadelphia, Pa., June 6, 1922. A. G. G. Answer: The following is a comparatively com- plete list: Fires in Ammonia Refrigerator Plants To the Editor: Have you on hand some information that you can forward to me regarding methods used in combatting fires that occur in buildings where ammonia refrigerator plants are located? Also what equipment…

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