Physics, by Willis Eugene Tower 40175 [Full author: Willis Eugene Tower and Charles Henry Smith and Charles Mark Turton and Thomas Darlington Cope] [Link: http://www.gutenberg.org/4/0/1/7/40175 ] [Files: 40175.txt; 40175-0.txt; 40175-h.htm] Thanks to Anna Hall, Albert Laszlo and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Many thanks Janet