At 02:58 PM 2/12/99 +0000, you wrote: >what happens to lemon juice exposed to light on paper. > I am sorry but I am marine mammalogist not a chemist. Best wishes, Aldemaro Romero, Ph.D. Director and Associate Professor Environmental Studies Program Macalester College 1600 Grand Ave. St. Paul, MN 55105-1899 (651) 696-8157 (651) 696-6443 (fax) romero@macalester.edu