PENNSYLVANIA RAILROAD CO. 1214 TRANSPORTATION CENTER PHILADELPHIA, PA. (4) JOINED: 5/1/51 RESIGNED: 3/4/58 D.

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REGARDING INCOME TAXES; Air Hygiene Foundation of America, Inc 4400 Fifth Avenue, Pittsburgh, Pa.

Nov.. 30, 1933 PLAINTIFF'S EXHIBIT My dear Dr.

American Society of Heating and Ventilating Engineers Guide, 1930 approximately 1.27 times the cubic feet of air admitted through the intake per hour on a zero day.

American Society of Heating and Ventilating Engineers Guide, 1930 forjproducing a draft in the flue pipe and for protection against the formation of condensation therein.

American Society of Heating and Ventilating Engineers Guide, 1930 them extra heavy galvanized pipe, since corrosion is very rapid.

American Society of Heating and Ventilating Engineers Guide, 1932 Table 6.

American Society of Heating and Ventilating Engineers Guide, 1932 Table 10.

American Society.of Heating and Ventilating Engineers Guide, 1932 mixture, at a given temperature, contributes to the observed pressure the same amount that it would have exerted by itself at the same temperature had no other gas or vapor been present.

American Society of Heating and Ventilating Engineers Guide, 1934 boiler and the horizontal main or runout is compensated for by the use of reducing ells (Figs. 5 and 6): The following example illustrates the sizing of the boiler connections shown in Fig. 8.

American Society of Heating and Ventilating Engineers Guide, 1934 8.

Index to Modern Equipment American Society of Heating and Ventilating Engineers Guide, 1934 AIR CLEANING EQUIPMENT AIR RECEIVERS (See Receivers, BOILER FEED PUMPS (See Air-Way Electric Appliance Corp.

American Society of Heating and Ventilating Engineers Guide, 1935 Table 2, Conductivities (k) and Conductances (Ca) of Building Materials and Insulators--Continued The coefficients ore expressed in Btu per hour Per square foot per degree Fahrenheit Per 1 in. thickness unless otherwise indicated.

Officers of Local Chapters 1934-35 Cleveland Headquarters, Cleveland, Ohio Meets: Second Thursday in Month President, M.