 Klee had removed the third Invention, "Pessimistische Allegorie des Gebirges" (Pessimistic Allegory of the Mountain), in February 1906 from his cycle.The satirical etchings, for example "Jungfrau im Baum/Jungfrau (träumend)" (Virgin on the tree/Virgin (dreaming)) from 1903 and "Greiser Phoenix" (Aged Phoenix) from 1905, were classified by Klee as "surrealistic outposts".