Macadam, W.I. 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, (Nov. 1882), 204–223. DOI:https://doi.org/10.9750/PSAS.016.204.223.