A Night there lay the Days between — Night-Train

A Night-there lay the Days between-1
The Day that was Before-
And Day that was Behind-were one-
And now-'twas Night-was here-

Slow-Night-that must be watched away-5
As Grains upon a shore-
Too imperceptible to note-
Till it be night-no more-
(F.609/J.471)
[1] A Night:: a night-train. Days:: day-cars.
[3] one:: one train, the same train.
[4] Night:: evening.
[5] Slow Night:: slow night-train.
[8] night no more:: the night-train arrived in the morning.

The Pennsylvania Central Railroad. . . . The cars are protected from dust and cinders, and are provided with every convenience; and the night cars which are attached to the trains have been tried sufficiently long to make their merits known. ─ Godey's Lady's Book for 1861 (1861)