| Play | Key Line | Modern Text | Original Text |
| As You Like It | AYL II.vii.41 | With observation, the which he vents | With obseruation, the which he vents |
| The Comedy of Errors | CE IV.ii.5 | What observation madest thou in this case |
What obseruation mad'st thou in this case? |
| Hamlet | Ham I.v.101 | That youth and observation copied there, | That youth and obseruation coppied there; |
| Henry VI Part 3 | 3H6 II.vi.108 | Tut, that's a foolish observation; | Tut, that's a foolish obseruation: |
| King John | KJ I.i.208 | That doth not smack of observation. | That doth not smoake of obseruation, |
| King Lear | KL I.i.289 | observation we have made of it hath not been little. He | obseruation we haue made of it hath beene little; he |
| Love's Labour's Lost | LLL II.i.214 | If my observation, which very seldom lies, | If my obseruation (which very seldome lies |
| Love's Labour's Lost | LLL III.i.25 | By my penny of observation. | By my penne of obseruation. |
| A Midsummer Night's Dream | MND IV.i.103 | For now our observation is performed. | For now our obseruation is perform'd; |
| The Tempest | Tem III.iii.88 | And observation strange, my meaner ministers | And obseruation strange, my meaner ministers |