Excerpt from Original Communications, Eighth International Congress of Applied Chemistry, Washington and New York, September 4 to 13, 1912, Vol. 25: Appendix Section I to Section Ve A quick method of estimating whether an ore or zinc product contains less than cadmium, or none at all, would in many cases save the necessity of the painstaking separating of cadmium, either by hydrogen sulphide or electrolytically, in zinc analysis. In a gravimetric or electrolytic zinc determination, the error caused by not separating O 05% cadmium would be but very little greater than that involved in the separation of the cadmium beforehand. When the zinc is determined by titrating with ferrocyanide, the error caused by the presence of cadmium is about or just about equal to that involved in a previous separation of this small percentage of cadmium. 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.