The fifth volume in the series is introduced by a biographical essay and summary of contents by Per Pippin Aspaas from UiT The Arctic University of Norway. It consists of the following digitized texts: Jens Christian Spidberg's short monograph Historische Demonstration und Anmerckung über die Eigenschafften und Ursachen des so genandten Nord-Lichts ('Historical Demonstration of, and Commentary on, the Properties and Causes of the so-called Northern Light'), published in 1724; a reprint of the same text, accompanied by a critical article by Johann Kanold, both from 1728; and a newspaper article that Spidberg wrote in 1738.
Published: 2017-12-21