Witchery by Frank Dempster Sherman Purely Nature poem

Out of the purple drifts,
From the shadow sea of night,
On tides of musk a moth uplifts
Its weary wings of white.

Is it a dream or ghost
Of a dream that comes to me,
Here in the twilight on the coast,
Blue cinctured by the sea?

Fashioned of foam and froth-
And the dream is ended soon,
And lo, whence came the moon-white moth
Comes now the moth-white moon!