The sunbeam, from a crack beneath the door,
Drew a glistening line across the rubber floor
Of the rapid-transit car.
The bumpy shaft, skimming the ebon mat,
Swept past the place where the driver sat,
As the train obeyed the curving rails.
What a clever trick of the morning light—
To steer a streak to left and right
And form a shining compass on the floor!