492 CHAPTER 20 1951: Guide in order to help in the trap action.

550 CHAPTER 24 1951 Guide Stoker-Fired.

878 CHAPTER 40 -1951 Guide Sound Control 879 Tateofl Fia. 6.

900 CHAPTER 42 1951 Guide insoluble carbonates (or, in the case of iron in the presence of oxygen ferric hydroxide or oxide may be formed).

1060 1951 Guide Bryant Heater Div., Affiliated Gas Weil-McLain Co., 1323 BURNERS, Automatic Equipment, Inc., 1107 Burnham Coro., 1310 Cleaver Brooks Co., 1326 Combustion Engineering-Super heater, Inc., 1328-1329 Crane Co., .1308-1309 Cyclotherm Corp-, 1327 Dewey-Shepard Boiler Co., 1330 Williams Oil-O-Matic Div., Williams Eureka Corp., 1358 BOILERS.

1076 1951 Guide SEPARATORS, Dust Dollinger Corp., 1176-1177 Raytheon Mfg., Co., 1179 - SEPARATORS, Oil Acme Industries, Inc., 1200 Air-Maze Corp., 1162-1163 Dollinger Corp., 1176-1177 Illinois Engineering Co., 1392-1393 Warren Webster & Co., 1403-1407 SEPARATORS, Refrigerant Oil Acme Industries, Inc., 1200 SHUTTERS, Automatic American Foundry 4 Furnace Co., 1104-1105 Dole Valve Co., The, 1409 General Blower Co., 1225 Ilg Electric Ventilating Co., 1136, 1227 Herman Nelson Div., American Air Filter Co., Inc., 1146-1147 New York Blower Co., The, 1232 United States Register Co., 1266- 1267 L.

400 CHAPTER 15 1952 Guide pot; (2) a secondary combustion chamber, or heat exchanger, in which combustion is completed.

660 CHAPTER 30 ,. 1952 Guide r 1.

694 CHAPTER 31 ; 1952 Guide Section Table 7.

848 CHAPTER 38 1952 Guide - Steam Jet.

884 CHAPTER 40 1952 Guide Sound Control 885 .Fig. 6 Acoustic Treatment op Ducts A.

, 880 CHAPTER 40 1952 Guide Table 5.

970 CHAPTER 46 1952 Guide f- Fiber saturation point is the moisture content of cellular materials (wood, etc.) at which the cell walls are completely saturated while the cavities are liquid-free.

1090 1952 Guide --Propellair Div..

506 CHAPTER 21 1953 Guide steam demand occurs, because this maximum demand creates a slight pressure drop in the service line.