(1): mentioned in Literarische Zeitung (Berlin) Nr. 51 (21 December 1842) page 1154. Remark (2): Cowie (1998: 105) mentioned March 1842 as the publication date, which is probably taken from the Literarische Zeitung Nr. 12 (23 March 1842) pages 287–288, but this is a description of the first volume of the Symbolae