Macadam, W. (1882) “On the Results of a Chemical Investiagation into the Composition of the ’Bog Butters,’ and of ’Adipocere’ and the ’Mineral Resins,’ with Notice of a Cask of Bog Butter found in Glen Gell, Morvern, Argyllshire, and now in the Museum”, Proceedings of the Society of Antiquaries of Scotland, 16, pp. 204-223. doi: 10.9750/PSAS.016.204.223.