mist-bow

The mist rose up about him, the pale mist-bow of ghostly promise curved before him; and he trod back again, poor boy, out of the clime of real effort, into the land of his dreams and shadowy enterprise.

Septimius Felton, or, The elixir of life 1872

I had looked back to bid farewell, and forward to the pale mist-bow that overarched my path, and was the omen of my fortunes.

Fragments from the Journal of a Solitary Man (From: "The Doliver Romance and Other Pieces: Tales and Sketches") Nathaniel Hawthorne 1834

The mist rose up about him, the pale mist-bow of ghostly promise curved before him; and he trod back again, poor boy, out of the clime of real effort, into the land of his dreams and shadowy enterprise.

Septimius Felton, or, the Elixir of Life Nathaniel Hawthorne 1834