Notebook with marble cover, containing four thick black leaves with skeleton leaves pasted in. On the front leaf Linnæus has written 'Hollman Prof. phil. goettingens. communicat. a Cl. Klewberg Prof. abeens.'
In "Iter Dalekarlicum", Carl Linnaeus writes about learning to make such skeleton leaves from a certain Hesselius in Falun, who had it from his brother, formerly a minister in America.