FO RM N O . tO (S>164) rby > Et h y l G a s o l i n e Co r p o r a t i o n S5 B r o a d w a y In t e r -Of f ic e Co r r e s po n d e n c e N e w YO RK Hovember 19, 1926 Dr.

of National Lead Company held at 111 Broadway, New York City, on Thursday, December IS, 1229, at 10 o'clock A.

Our present American Braksblok Division was, on its organization in the middle twenties, originally known as American Brake Materials Corp. and is one or tw.o of our operating divisions which was built from a Brake Shoe idea rather than from buying a going business.

PUBLIC LIBRARY 295970\ LiJsnx >N0 Lone Star CONSTRUCTORSMIlt. integrity and Responsibility Vol. 1 OCTOBER, 1924 Skill, Integrity and Responsibility No. 1 CONTENTS Page Editorials ...........................................................................................3-4 Responsibility Loaded on Contractors ................................ 5 A.

Chemicals decrease fertility, study says Amerlaa men neem to be km fertile then tom wen > decade ago and chemical con- tandMtloa el the emdronraent may tie the caeet, ecceedhy te t Florida State Univend- tydWBMi A etady el IS college men awora grow- lai etMiace that Venn ceaau aeem to haw* tfecBned rapidly over thn lent M yuan

MONSANTO INDUSTRIAL CHEMICALS CO.

CONTRACT 1TEKi73 AND COr.OfTtGJJS &N. .

Valves Detroit Iubricator Company New York DETROIT.

American Society of Heating and Ventilating Engineers Guide, 1924-25 welding.

American Society of Heating and Ventilating Engineers Guide, 1924-25 purpose of controlling its physical characteristics comes under this classification.

Index to Advertisers American Society 6/ Heating and ventilating Engineers Guide 1924-25 Page Abendroth Brothers, Port Chester, N.

American Society of Heating and Ventilating Engineers Guide, 1925-26 peratures prevail in the working space.

American Society of Heating and Ventilating Engineers Guide, 1925-26 62 ' ' American Society of Heating and Ventilating Engineers Guide, 1925-26 Table 36.

Ventilators American-Larson Ventilating Co. 324 Fourth Ave., PITTSBURGH, PA.

Copyright, 1926 by , American Society of Heating and Ventilating Engineers Printed and Bound by The Horn-Shafer Company BALTIMORE MARYLAND 1 'Tfef. >28.8 PREFACE PROGRESS has been made each year in making a worthwhile con tribution toward the dissemination of knowledge about heating and ventilating engineering and the Society's latest effort is The Guide, 1926-27 which is the fifth of these annual editions for engineers, archi tects, contractors and others who are desirous of having a complete knowledge of the heating and ventilating art.