Glow-Worm, the FEMALE, of the Fire-fly, or Lampyris no luca, L. is remarkable lor the light it emits during the night. This luminous appearance depends upon a phosphorescent liquor found at the lower extremity of the insect, which, by unfolding or contracting itself, withdraws it at pleasure.

The glow-worm flies about chiefly in autumn, and frequents the grassy plantations of juniper-trees. The whole insect was formerly used in medicine as a solvent of the stone, and highly extolled an an anodyne; but it is at present deservedly exploded.