The Progress of Invention in the Nineteenth Century., by Edward W. Byrn  41538   [Link: http://www.gutenberg.org/4/1/5/3/41538 ]   [Files: 41538.txt; 41538-8.txt; 41538-0.txt; 41538-h.htm] Thanks to Chris Curnow, Harry Lamé and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Chuck