A conservative statement would therefore be that luminous bacteria show no changes in luminescence as a result of illumination by 625 foot candles for 1.5 minutes when examined 1/200 of a second after exposure, and none as the result of illumination by 15,000 foot candles for 6 minutes when examined ⅙ of a second after exposure.
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Copyright, 1925, by The Rockefeller Institute for Medical Research
1925
