Excerpt from Density and Electrical Properties of the System, Rubber-Sulphur Time of vulcanization Time of vulcanization Density (minutes at 127 (minutes at 127 C.) 3: Per cent i'i' 3. 3 1. 0313 615 1. 0743 3. 8 1. 0325 870 18. 9 1. 0772 3. 7 1. 0328 1. 0793 1. 0802 8. 2 1. 0438 1 See text for composition. 9 Density calculated from composition, The change in density with increasing proportions of combined sulphur, after the initial decrease, is approximately linear. When practically all the sulphur is in combination, the curve shows a slight in ection which may be due to reactions other than between rubber and sulphur.' 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."