Light was still another form of energy that could be produced in a chemical reaction and, as was discovered even before the nineteenth century, it could in turn induce chemical reactions.
(Light; was; T:still; another form of energy) (energy; could be produced; L:in a chemical reaction) (it; could induce; chemical reactions)
Light energy it
was could be produced could induce
T:still another form of energy
L:in a chemical reaction
chemical reactions