His treatise Draft of a Physical, Geographical, and Historical Description of Icelandic Ice Mountains on the Basis of a Journey to the Most Prominent of Them in 1792–1794 was submitted to the Naturhistorieselskabet in Denmark in 1795, where it languished for almost a century.
His manuscript, "Draft of a Physical, Geographical, and Historical Description of Icelandic Ice Mountains Based on a Journey to the Most Prominent Ones in 1792–1794," was submitted to the Naturhistorieselskabet in Denmark in 1795 but remained unnoticed for nearly a century.