| http://www.w3.org/ns/prov#value | - d; that it can be inhibited by chemical agents such as alcohol, hydrochloric acid, and ammonia; and that the light emission is dependent on air (as later established, on oxygen).In 1885???87 it was observed that crude extracts prepared from West Indian fireflies (Pyrophorus) and from the boring clam, Pholas, gave a light-emitting reaction when mixed together.
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