Elementary and Practical Treatise on Subterraneous Surveying and the Magnetic Variation of the Needle

<p>Elementary and Practical Treatise on Subterraneous Surveying and the Magnetic Variation of the Needle by Thomas Fenwick is a detailed guide to the techniques and principles of surveying underground spaces particularly mines. Originally published in 1861 this treatise offers a comprehensive look at the methods used to map and navigate subterranean environments with a strong emphasis on practical application. The book covers essential topics such as the use of surveying instruments the calculation of distances and angles and the management of magnetic variation in the needle a crucial factor in accurate underground mapping.</p><p>Fenwick's work provides valuable insights into the challenges faced by surveyors in the 19th century and the innovative solutions they developed. This historical text is an invaluable resource for historians of technology geologists and anyone interested in the history of mining and surveying techniques.</p><p>This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact and remains as true to the original work as possible. Therefore you will see the original copyright references library stamps (as most of these works have been housed in our most important libraries around the world) and other notations in the work.</p><p>This work is in the public domain in the United States of America and possibly other nations. Within the United States you may freely copy and distribute this work as no entity (individual or corporate) has a copyright on the body of the work.</p><p>As a reproduction of a historical artifact this work may contain missing or blurred pages poor pictures errant marks etc. Scholars believe and we concur that this work is important enough to be preserved reproduced and made generally available to the public. We appreciate your support of the preservation process and thank you for being an important part of keeping this knowledge alive and relevant.</p>