Excerpt from Journal of Research of the National Bureau of Standards, Vol. 13: September 1934 Beginning With the July. 1934 issue of the Journal of Research of the National Bureau of Standards, the prices of the separate Research Papers appearing in the monthly issues are given on the front cover of the Journal. A 25-percent discount is allowed When ordering 100 or more copies of any separate. 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.