The poem "Dust of Snow" by Robert Frost evokes the sense of black and white through various literary devices and imagery.

Personification of Nature
The poet personifies nature by describing it as throwing a "hemlock tree" and a "handful of snow" on the speaker. This personification creates a sense of action and movement, which helps to evoke the feeling of black and white.

Contrasting Imagery
The contrast between the black hemlock tree and the white snow helps to create a clear sense of black and white in the poem. The dust of snow that falls from the tree onto the speaker's clothes is also a contrast between the darkness of the hemlock tree and the lightness of the snow.

Symbolism
The hemlock tree symbolizes death and darkness, while the snow symbolizes purity and innocence. The contrast between these two symbols helps to create a sense of black and white in the poem.

Rhyme Scheme and Meter
The poem's rhyme scheme and meter contribute to the sense of black and white. The poem has an AABB rhyme scheme, which creates a sense of order and structure. The meter is iambic tetrameter, which creates a steady and rhythmic flow to the poem. These elements contribute to the black and white imagery of the poem by creating a sense of balance and symmetry.

In conclusion, the poet uses personification, contrasting imagery, symbolism, and rhyme scheme to evoke the sense of black and white in the poem "Dust of Snow". The use of these literary devices helps to create a vivid and memorable image of the hemlock tree and the snow, which symbolize the darkness and lightness in life.

The poem is set in all white surrounding; everything is covered with snow. Amidst this white surrounding, a black crow appears and does something that clears the blackness from the poet’s mind and heart. Hence, we can say that crow and sorrow depict ‘black’ and snow and the happiness of the poet signify white colour in the poem.