Common moss, Phascum cuspidatum, and pond algae.. Magnified image of common moss, Phascum cuspidatum 1, and microscopic enlargment of pond algae, Hydrodictyon utriculatum 2. handcolored copperplate engraving from Bertuch's -Bilderbuch fur Kinder- (Picture Book for Children), Weimar, 1798. Friedrich Johann Bertuch (1747-1822) was a German publisher and man of arts most famous for his 12-volume encyclopedia for children illustrated with 1,200 engraved plates on natural history, science, costume, mythology, etc., published from 1790-1830.