Practical Lithography, by Alfred Seymour                                 40198   [Link: http://www.gutenberg.org/4/0/1/9/40198 ]   [Files: 40198.txt; 40198-8.txt; 40198-h.htm] Thanks to Chris Curnow, Rosanna Murphy 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