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want to talk about Japanese fireflies, but not entomologically. If you are interested, as you ought to be, in the scientific side of the subject, you should seek enlightenment from a Japanese professor of biology, now lecturing at the Imperial University of Tokyo. He signs himself "Mr. S. Watase" (the "S" standing for the personal name Shōzaburō); and he has been a teacher as well as a student of science in America, where a number of his lectures have been published,—lectures upon animal phosphorescence, animal electricity, the light-producing organs of insects and fishes, and other wonderful topics of biology. He can tell you all that is known concerning the morphology of fireflies, the physiology of fireflies, the photometry of fireflies, the chemistry of their luminous substance, the spectroscopic analysis of their light, and the significance of that light in terms of ether-vibration. By experiment he