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A curious and unusual phenomenon, in the form of a rainbow for which the moon instead of the sun fur nished the light, was observed here on the night of June 19. A heavy rainstorm, accompanied by con siderable thunder, occurred just before moonrise. As the clouds retired to the west, the luminary rose and the bow was first observed, only the extremities for about 25 degrees being visible, the moon at that time being concealed behind a small cloud. For about twenty minutes, the bow increased indoi:10.1038/scientificamerican07081905-27 fatcat:tpknsqqzjvg25e4dhcan6i6s64