102 Chapter 4 1945 Guide approximately twice the. floor heat loss under average conditions in northern latitudes or about 4.0 Btu per hour per square foot (total, not per degree temperature difference) between the basement air and the ground at a level corresponding to the mid-height of the basement wall.

1 ,, ,^,, 46 -&-ZS y*'Heating'-Ventilating *.

122 CHAPTER 6 :> 1946 Guide emissivities aiid is practically independent of depth.

134 ' , , CHAPTER 6

424 CHAPTER 23 1946 Guide system the automatic air valves are of special design to permit the ready release of air and prevent its ready return after it is expelled.

436 CHAPTER 23 1946 Guide install a pressure gage immediately before the reducing, valve of the second-stage reduction also'.

CHAPTER 28 1946 Guide greater than those given.

606 CHAPTER 34 1946- Guide.

192 / CHAPTER 11 1948 Guitfe At the National Bureau of Standards, sampling tubes are-used-upstream and downstream- of :ah air cleaner under, test whereby samples of air cart be drawn through filter papers to afford an evaluation.of the comparative/ effectiveness of the cleaner in arresting dust Other instruments for evaluating dust, including the koriimeter, are described by Drinker and Hatch **

222 CHAPTER 13 1948 Guide , cyclopropane, one of the best but most difficult gases to handle.

.560 CHAPTER 30 1948 Guide A typical domestic hot water heater as shown in Fig. 5 is arranged with upper and lower heating elements for the usual type of off-peak heating service.

710 CHAPTER 39 1948 Guide ance, is greater than that of a refrigeration cycle operating between the same temperature limits.

812 CHAPTER 44 1948 Guide Table 7.

934[ 1948 Guide .

94 CHAPTER 4 1949 Guide - Fluid Flow; 95 , FLOW.