'I am making a collection of quhat fossiles (quherof yours makes noe small part), shells, coins, &c., that I can fall on hereabouts, and desing to leave them to the University quhen I goe from the post that I am in. I promise my self your kind help to forward this with any thing you can spare.' (Sharp 1937, pp. 187-9, letter 94; Burnett 2020b, p. 810)