The frequent occurrence of this phenomenon lately suggests the idea, whether it be any way connected with the relation of the atmosphere to an electric or other condition.

On Thursday evening last, at 7 o'clock, I observed a very beautiful rainbow, from Duke Street, extending in a brilliant and unbroken arch in a westerly direction; the south end springing from the west end of Queen Street, and the north end stretching to the eastern extremity of Abercromby Place, comprising a space in the horizon of 60° or 70°, and rising 16° or 18° in altitude.