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CONTRIBUTIONS .7 - ' ..TO TH2 - ; SARANAC LABORATORY From October 1, 1939 to September 30, 1940 NUTK: -- Items in s*rnnd column received ifier October 1st. 13tu. to be credited in tbe 1311- report.

IBFGoodrich purchase order 500 SOUTH MAIN STREET AKRON, OH 44318 requisition and order NUMBERS below must APPEAR on INVOICES. packages.

Patented Jan. 3, 1933 ,1 892,864 UNITED STATES PATENT OFFICE WALTER 0.

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AIRFLEX (Who Are We?)

r-27-90 TUE 16!

HWBB-0007815 Air Hygiene Fotmdation of America, Inc., 4400 Fifth Avenue, Pittsburgh, Pa., February I, 1937.

19~0 Annual Report MEMBERS Jutmft Company 19!"

American Society of Heating and Ventilating Engineers Guide, 1930 Stack heads should have upper end curved to provide easy flow of warm air to the room.

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 Certain chemicals, such as a concentrated solution of calcium chloride, solutions of sulphuric acid, alcohol, etc., are correspondingly hygroscopic and react to changes in moisture in the same way.

American Society of Heating and Ventilating Engineers Guide, 1930 where it would not be sufficient to carry the material from the machines still in operation, and thus result in clogging the pipes; Accordingly, it is sometimes desirable to use velocities higher than the minimum to allow a factor of safety to cover this contingency.

American Society of Heating and Ventilating Engineers Guide, 1930 HART, Thomas H.