| Mac IV.i.110.2 | [stage direction] A show of eight kings, and Banquo; the last king with a glass in his hand |
| Mac IV.i.118 | [Macbeth to himself, of the apparition showing Banquo's descendants] the eighth appears, who bears a glass / Which shows me many more |
| MM II.ii.95 | [Angelo to Isabella, of the law] like a prophet / Looks in a glass that shows ... future evils |