Excerpt from American Society for Testing Materials, Vol. 21 of 25: Index to Proceedings 1921-1925 Committee reports have been indexed in two ways: first, each committee report is indexed under the subject designated in its title, at which place a synopsis of the successive reports of the committee is given; second, the subjects covered in the committee reports, in cluding all specifications, methods, definitions, etc., are indexed under the appropriate key words. Titles of papers are distinguished by quotation marks. The list of key words in the Subject Index is given separately at the beginning of the volume. This list, it is believed, will prove a convenience in determining the key word or key words under which the subject sought is likely to appear, before turning to the Subject Index itself. The key words are not restricted to the words in the titles of reports and papers, but the aim hasbeen to further facilitate the search for information on important subjects by directing atten tion through the key words to pertinent matter in the body of the text of reports, papers and discussions. The cross references between key words serve to refer the reader to other places in the Index where information on the subject first consulted might also be found, or to topics that are related to the subject first consulted. In the Author Index, references to committee reports appear under the names of the chairmen, vice-chairmen and secretaries of the committees concerned. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.