Opticks, by Isaac
   Newton������������������������������������������������ 33504
   � [Subtitle: or, a Treatise of the Reflections, Refractions,
   Inflections,
   ������������� and Colours of Light]
   � [Link: [1]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
   [2]http://www.pgdp.net.
   Many thanks
   Janet

References

   1. http://www.gutenberg.org/3/3/5/0/33504
   2. http://www.pgdp.net/