Excerpt from The Lime-Sulphur-Salt Wash and Its Substitutes During the past two years the Miscellaneous Laboratory of the Bureau of Chemistry, at the request of the Bureau of Entomology, has made a number of studies of the composition and decomposition of the lime-sulphur-salt wash and its substitutes, and the results of these studies have appeared in various publications from time to time. Recently much more extended studies have been made, which, together with the earlier work, are presented in the present report. All of the experiments reported in this bulletin have a practical significance and were conducted with a view to solving certain problems arising in actual practice, questions concerning which are often asked by correspondents both of the Bureau of Entomology and the Bureau of Chemistry. Messrs. B. H. Smith and Charles Goodrich, of the Bureau of Chemistry, assisted in the analytical work, and Messrs. C. L. Marlatt and A. L. Quaintance of the Bureau of Entomology, made many valuable suggestions in regard to the solution of the problems presented. The Lime-Sulphur-Salt Wash. Effect of Time of Boiling on Composition of Wash. The first experiment was to determine the composition of the lime-sulphur-salt wash, using constant amounts of the various ingredients but boiling for varying lengths of time, or, in other words, to study the effect of the time of boiling on the composition of the wash. For this purpose chemically pure reagents were employed, and a fractional part of the following formula used: Lime 30 pounds, sulphur 20 pounds, salt 15 pounds, and water 60 gallons, the boiling being carried on in a closed enamel boiler. After mixing the above ingredients, and before heating, the volume of the mixture was determined, and in every experiment thereafter, whatever the time of boiling and the consequent reduction in volume, the total volume was made up to the volume as first determined, and aliquot portions taken for analysis. Theoretically each 100 cc of such a mixture as the above should contain 5.55 grams of calcium oxid and 3.89 grams of sulphur, in case there had been loss by volatilization or mechanically. 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 techlogy 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.