The Principles of Biology, Volume 1 (of 2), by Herbert Spencer 54612 [Link: http://www.gutenberg.org/5/4/6/1/54612 ] [Files: 54612-8.txt; 54612-h.htm] Thanks to Keith Edkins, MFR, Adrian Mastronardi and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) Regards, Al