Giant grasshopper; Tropidacris cristata (Gryllus cristata). Handcoloured copperplate engraving from Bertuch's Bilderbuch fur Kinder (Picture Book for Children); Weimar; 1805. 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.