Final answer:
In Shakespeare's 'Hamlet,' the ghost's speech has a melancholic tone, reflected in its somber reflection on its earthly life and current suffering in the afterlife.
Step-by-step explanation:
The tone of the ghost's speech in Shakespeare's Hamlet is best described as melancholic. This tone is conveyed through the ghost's reference to "my days of nature", wherein it reflects on its past life and present suffering in the afterlife. The use of phrases like "doom'd", "walk the night," and "fast in fires" underscores the regret and sadness of King Hamlet's spirit, as it tells of its purgatorial existence until its sins are purged.