Ures Dictionary Of Arts Manufactures And Mines Containing A Clear Exposition Of Their Principles And Practice Vol 2 D I

Excerpt from Dictionary of Arts, Manufactures, and Mines, Vol. 2 of 2: Containing a Clear Exposition of Their Principles and Practice According to Franke, the constituents of stick-lac are, resin, 65-7; substance of the lac, 28-3 coloring matter, 0-6. Sced-lac. - When the resinous concretion is taken off the twigs, coarsely pounded, and triturated with water in a mortar, the greater part of the coloring matter is dissolved, and the granular portion which remains, being dried in the sun, constitutes seed-lac. It con tains of course less coloring matter than the stick-lac, and is much less soluble. John found in 100 parts of it, resin, 66-7; wax, 1-7; matter of the lac, 16-7; bitter balsamic matter, 2-5; coloring matter, 3-9; dun yellow extract, 0-4; envelopes of insects, 2-1; laceie acid, 0-0; salts of potash and lime, 1-0; earths, 6-6; loss, 4-2. 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.

Excerpt from A Dictionary of Arts, Manufactures, and Mines, Vol. 2 of 2: Containing a Clear Exposition of Their Principles and Practice Eitrieecidismdlymdeontheumllseelebydistilling, withtheheetd'amd Mummeefsmtsofperenitre, end2wuofstrohgsulphufie hem (bemoanneetedbye long glass tube witha globular receiver by water. Byewefl-nguhwddisfinafiomnpureeeid, ofepeeificgnvity1500, mtyhe afing in weight to about two thirdsof the nitte employed. To obtain easily the whole nitric ecid, equel weightsof nitre and concentrated sulphuric acid he ulten; in which case hutamoderute heat need beepplied to the retort. 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.

Excerpt from A Dictionary of Arts, Manufactures, and Mines, Vol. 2: Containing a Clear Exposition of Their Principles and Practice The phosphorus falls down in drops, like melted wax, and concretes at the bottom of the water in the receiver. It requires to be purified by squeezing in a shamoy leather bag, while immersed under the surface of warm water, contained in an earthen pan. Each bag must be firmly tied into a ball form, of the size of the fist, and compressed, under the water heated to by a pair of flat wooden pincers, like those with which oranges are squeezed. The purified phosphorus is moulded for sale into little cylinders, by melting it at the bottom of a deep jar filled with water, then plunging the wider end of a slightly tapering but straight glass tube into the water, sucking this up to the top of the glass, so as to warm it, next immersing the end in the liquid phosphorus, and sucking it up to any desired height. 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.

Excerpt from Ure's Dictionary of Arts, Manufacture, and Mines, Vol. 2 of 3: Containing a Clear Exposition of Their Principles and Practice Carefully polishing the silver plate after some of the methods previously described, and the application finally Of the highest polish by the use of a buffer, the best form being that employed by M. Claudet. 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.