In this poem, Hardy describes in detail the transformative effect of snow on the English suburbs. To begin, Hardy uses imagery to convey this transformation. The twigs are so weighed down by snow, for example, that they are "bent" out of shape. Moreover, the snow is responsible for silence ("mute")...
on every street. This is an example of an auditory image, and it is designed to immerse the reader in this snowy scene.
Hardy also uses personification in his poem as a means of bringing this scene to life. The snowflakes, for instance, are given human qualities as he charts their progression: some are lost while others meander along their route.
In addition, Hardy uses alliteration to create pleasing sounds for the reader. This is significant because it reflects the beauty of this snowy scene. In line eight, for example, Hardy repeats the f sound, and he repeats the s sound in line 16.
Finally, by using these literary devices, Hardy creates a gentle and pleasant tone in which he expresses his respect for nature and highlights its inherent beauty.