How it dwells
On the Future! — how it tells
Of the rapture that impels
To the swinging and the ringing
Of the bells, bells, bells
Of the bells, bells, bells, bells
Bells, bells, bells —
To the rhyming and the chiming of the bells!
III.
Hear the loud alarum bells —
Brazen bells!
What tale of terror, now, their turbulency tells!
In the startled ear of night
How they scream out their affright!
Too much horrified to speak
They can only shriek, shriek
This is the third time the night is referenced. In stanza I, it  was icy ; in stanza II, it  was balmy ; but now, it is being personified as a startled character. 
 Typically, the night is associated with terror; for the night to even be scared gives us chills.
The Bells