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This is Volume 135 of the 'Journal' of the Franklin Institute of the State of Pennsylvania. Founded in Philadelphia in 1824, the Franklin Institute has long been a locus of scientific and technological advancement in the United States. This historical volume offers insights into the scientific thought, technological developments, and industrial progress of the era. It serves as a valuable primary source for historians of science and technology, researchers interested in the early development of American industry, and anyone curious about the intellectual landscape of 19th-century America. The 'Journal' provides a window into the innovations and debates that shaped the nation’s scientific and technological trajectory.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.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.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.
