50 ^Heating.

66 CHAPTER 3' `1946 Guide The humidity ratio W is the mol ratio Ww/na iimes the ratio of mole cular weights, namely, 18.016/28.966 = 0.6220; hence (13) can be written W = 0.6220 ------ P -- Pw- (14) Now, even if it is assumed that both the dry air and the water vapor.' behave like perfect gases, it does not follow that at saturation the "partial" pressure of the water vapor can be put equal to the saturation pressure of pure water at the temperature of the mixture because; (1) the coexisting liquid (or solid) phase is not pure water but contains a small amount of dissolved air, and (2) the coexisting liquid (or solid) phase has to support the observed pressure p and not just the saturation pressure p, of pure water.

332 CHAPTER 17 1946 Guide oil burners usually have available detailed plans for adapting their burners to various types of boilers, and such information should be utilized.

426 CHAPTER 23 1946 Guide fire, and (3) because with large variations in pressure the value of gradu ated valves on radiators is destroyed.

646 CHAPTER 37 1946 Guide Table 1.

'836 CHAPTER 46 1946 Guide theories govern both classes.

14 , CHAPTER 2 1948 Guide THE GREEK ALPHABET A a' Alpha B $ Beta r y Gamma A' 8 Delta E e Epsilon Z Zeta H i) Eta 6 Theta I t Iota K k Kappa .

82.

138 iCHAPTER 6 1948 Guide Interstitial condensation results from vapor transmission which is dependent on vapor pressure differential and the ratio of the rate at which vapor may enter the materials of the structure to that at which it passes out of the structure.

244 CHAPTER 14 1948\ Guide* Temperatures Under Basement Floors' The temperature under basement floors 8 is influenced by the heat from the basement or protected from the influence of atmospheric conditions by the basement.

490CHAPTER 25 1948 Guide about 150 to 300 for evaporating dichlorodifluoromethane, about 350 to 1200 for water at 2 and 6 fps and about 1200 for condensing steam.

704 CHAPTER 39 1948.

706 CHAPTER 39 1948 Guide - pressors of the type commonly used in power plants for various processes will produce the necessary low absolute pressure to cause evaporation of the water.

728 ...

742 , CHAPTER 40 1948 Guide Table 1.