[409-75] This means, Why do you look so ghastly?
[410-1] Inch-meal means piece-meal.
[410-2] Urchin-shows are fairy-shows.
[410-3] Fire-brand refers to will o’ the wisp, or dancing balls of light seen sometimes at night in swampy places. People used to think these lights were tended by naughty sprites who lured men into trouble.
[410-4] We would now say sometimes.
[410-5] Mow means make mouths or grin.
[411-6] Pricks, here, means their prickles or sharp quills.
[411-7] Caliban is a monster, part brute, part human, more fish-like than man-like, probably. He works only when Prospero drives him to it, and he hates his master bitterly in spite of all that the latter has done for him. Now Caliban is under punishment for his wickedness.
[411-8] To bear off means to keep off.
[411-9] A bombard is a black jar or jug to hold liquor.