664 CHAPTER 37 1948 Guide by the secondary louvering which extends upward from each primary, louver's outer edge to the next primary louver above.

752 CHAPTER 41 1948 Guide ' Air Duct Design ableT 2.

800 CH4PTER 43 1948 Guide SENSIBLE COOLING WITH UNWETTED COILS Under favorable atmospheric conditions where a large wet-bulb depres sion exists and the dew-point of the outdoor air is sufficiently low at all times, acceptable cooling may be obtained by removing only the sensible heat from the outdoor air delivered to the rooms.

8 CHAPTER 1 1949 Guide Resistor, Electric: A material used to produce heat by passing an electric current through it.

.148 CHAPTER-6 1949 Guided material, or some vapor resistant coating may be applied to the inner or warm surface of the wall.

396 CHAPTER 18 .. 1949 Guide usually apply primarily to installation and the Underwriters' Laboratories label of approval is sufficient to cover, acceptance of the unit.

572 CHAPTER 27 1949 Guided Fittings for copper pipe of IPS dimensions are available in screwed or soldered types of. connection.

596 CHAPTER 29 1949 Guide ments of apparatus to be served.

934 CHAPTER 48 1949 Guide were generally gradual enough so that manual readjustment of controls could'maintain reasonably comfortable cabin conditions.

968 .

Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL daciaiona and traadi MAY, 1949 (Vol. 13, No. 5) \ liu \,

% Mellon Institute of Industrial Research UNIVERSITY OF PITTSBURGH PLAINTIFF'S EXHIBIT PROGRESS REPORT for the week ended January 11, 1947 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 259-15 5 copies made: 1 - Mellon Institute 2 - Industrial Hygiene file Some repairs were made on laboratory apparatus.

1 - ' 'A ;\ Industrial Hygiene Foundation, 4400 Fifth Avenue* - Pittsburgh, Pennsylvania, October 30, 1944 Note to Members: , Attached'is the official notice and proxy for the Ninth Annual Meeting of Industrial Hygiene Foundation which will be held at Mellon Institute, Pittsburgh, November 15 and 16.

Registers Air System Equipment CONNOR ENGINEERING CORP.

FOUNDATION FACTS, 1947 48 ANDREW FLETCHER President, Si Joseph Lead Company Cheirmen, Boerd of Trustees, Industrial Hygiene Foundation Member?