Theory:

When the humid shadows hover
Over all the starry spheres
And the melancholy darkness
Gently weeps in rainy tears,
What a bliss to press the pillow
Of a cottage-chamber bed
And lie listening to the patter
Of the soft rain overhead!

Every tinkle on the shingles
Has an echo in the heart;
And a thousand dreamy fancies
Into busy being start,
And a thousand recollections
Weave their air-threads into woof,
As I listen to the patter
Of the rain upon the roof.

Now in memory comes my mother,
As she used in years agone,
To regard the darling dreamers
Ere she left them till the dawn:
O! I feel her fond look on me
As I list to this refrain
Which is played upon the shingles
By the patter of the rain.
 
                               ~ COATES KINNEY
Reference:
National Council of Educational Research and Training (2006). Beehive. Rain on the Roof -  Coates Kinney (pp 41-42). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.