892 CHAPTER 41 1951 Guide the electric heater serves as a tempering tank, absorbing heat from the basement air and requiring the use of less energy in the electric heater.

908 CHAPTER 42 1951 Guide of brines.

Air System Equipment Air Filters 155 E. 44th St, New York 17, N.Y.

Heating Systems 1^5 <t Hoffman Specialty Company General Office and Factory 1001 York Street, Indianapolis 7, Ind.

Insulation Air Ducts The Philip Carey Mfg.

158 CHAPTER 8 1952 Guide ' Table 3.

324 CHAPTER 13 1952 Guide slightly in mild weather, and should be shaken only until the first red particles drop from the grates in cold weather.

620 CHAPTER 28 1952 Guide " steam requirements such as laundry, cooking, or process, should be indi vidually calculated.

928 CHAPTER 43 1952 Guide i ' -large air conditioning installations,, using high quality equipment, some approximate costs per ton are given in Table 4.

( " Heating Systems Boners, cost-iron SPENCER H EATER LYCOMING-SPENCER DIVISION ,4sp out pinhS Sales Representatives Allentown, Pa.

814 CHAPTER 37 1953 Guide Table 3.

910 CHAPTER 42 1953 Guide uids, and when cast into metal or formed into coils, are used in water heaters, electric ranges and air heaters.

968 CHAPTER 45 s r , 1953, Guide Table 1.

Air Hygiene Foundation of America, Inc 4400 Fifth Avenue, Pittsburgh, Pa.

AFFIDAVIT CITY OF PITTSBURGH STATE OF PENNSYLVANIA ) ss BEFORE ME, a Notary Public in and for the State of Pennsylvania personally appeared iCk- who stated under due oath of law as follows: am a librarian for in Pittsburgh, Pennsylvania.