And all within its arch appeared to be

Clearer than that without, and its wide hue

Waxed broad and waving, like a banner free,

Then changed like to a bow that's bent, and then

Forsook the dim eyes of these shipwrecked men.

XCII.

It changed, of course; a heavenly Chameleon,

The airy child of vapour and the sun,

Brought forth in purple, cradled in vermilion,

Baptized in molten gold, and swathed in dun,