In Canto Three of his poem John Shade (the poet in VN's novel Pale Fire, 1962) mentions a dying man who conjures in two tongues the nebulae dilating in his lungs:
Nor can one help the exile, the old man
Dying in a motel, with the loud fan
Revolving in the torrid prairie night
And, from the outside, bits of colored light
Reaching his bed like dark hands from the past
Offering jems; and death is coming fast.
He suffocates and conjures in two tongues
The nebulae dilating in his lungs. (ll. 609-616)