'Principal Stirling tells me you are beginning the Atlas for Scotland ; and if I can give you any assistance from a collection I made long since of fossils and formed stones, curious enough in their kinds, I gathered hereabout, and some Roman coins and instruments in my hands, dug up here, they shall be communicate to you.' (McCrie 1842-3, vol. 2, pp. 308-16; Burnett 2020b, p. 811)