We returned from Ireland yesterday—2 May I come to you on Saturday afternoon?3 & if I do may I bring Charlie4 with me— he can amuse himself famously— I shall have to return early on Monday as I am alone at Kew.—
The date is established by the reference to Hooker’s visit to Ireland (see n. 2, below), and by the reference to Hooker’s visit to Down on 24 July (see n. 3, below). The preceding Thursday was 21 July.