Now a great change has come over the scene; the moon has been curtained off by a heavy mass of clouds, and its light is shut off from the water. The lights of the city shine out with increased distinctness; the moonlight that whitened the sides of the buildings now has left them black masses of vague shadow, and all at once one gets the impression of looking down into an inverted firmament studded with countless stars of as various magnitudes as in the heavens, from the bright electric arc-lights to tiny gaslights; and from this height of over 400 feet one gets the impression, familiar to those who have looked at the world from a balloon, that the rim of the horizon rises all round.