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* 1.1It being the opinion of some, that the shin∣ing of Glow-worms proceeds from a kind of Effulsion of the Biolychnium, or Vital Flame; I shall subjoin, That Glow-Worms being inclu∣ded in a Receiver in the Dark, as the Air was exhausted, their Light was diminish'd, and as it was let in again, renewed. And lest this
should depend on the Glow-Worm drawing the luminous Part of its Body into the dark Part, and so obscuring it, I enclosed the luminous Parts by themselves, and observed the same Phaenomena as before; save that, upon the Re∣ingress of Air, they seemed more lucid than before. The like Experiments being repeated with a dead Worm, it at the first retained its Light when the Air was exhausted, but after a while it diminish'd and increas'd as the Light of a live one, only it shone more vividly, and as the Light of the live one was a greenish blue, so this afforded a white yellow.
Of the shin∣ing of Glow Worms.