Final answer:
The sound device in the bolded words is alliteration.
Step-by-step explanation:
The sound device that appears in the bolded words is Alliteration. Alliteration is the repetition of initial consonant sounds in neighboring words, and it is used to create a musical effect and emphasize certain words or phrases. In the given lines, the repetition of the 'b' sound in words like 'brown,' 'baby,' and 'bells' creates an alliterative effect, enhancing the musicality of the poem.
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