The Essentials of Illustration, by T. G. (Thomas George) Hill 34869 [Subtitle: A Practical Guide to the Reproduction of Drawings & Photographs for the Use of Scientists & Others] [Link: http://www.gutenberg.org/3/4/8/6/34869 ] [Files: 34869.txt; 34869-8.txt; 34869-h.htm] Thanks to Lesley Halamek, Chris Curnow and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al