Opticks, by Isaac Newton 33504 [Subtitle: or, a Treatise of the Reflections, Refractions, Inflections, and Colours of Light] [Link: http://www.gutenberg.org/3/3/5/0/33504 ] [Files: 33504.txt; 33504-8.txt; 33504-h.htm] Thanks to Suzanne Lybarger, steve harris, Josephine Paolucci and the Online Distributed Proofreading Team at http://www.pgdp.net. Many thanks Janet