Excerpt from Journal of the Washington Academy of Sciences: 1918 After several such exasperating experiences with glass stills the overheating being caused by rising voltage on the power line - we had our still remade of silica glass (fused quartz, or quartz and it has been in use more or less continuously for, several years. The additional cost of the Silica-glass still is well expended in the insurance thereby secured against inter ruption of the distillation. We have been requested to put on record a brief description of the still, having had a number of inquiries for information concerning its design. Design of the still. The construction is shown in detail in figure 1. An effort has been made to Simplify the still as much as possible in order to minimize the difficulties connected with the working of silica glass. N O originality is claimed for the design: an inspection of the diagram will show that the essential points of any continuously acting still have been embodied, some having been taken from one still and some from another. 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.