Cetus constellation. Illustrated card from a 19th century astronomical teaching aid called Urania's Mirror, after the Greek muse of astronomy. This card shows the constellations Psalterium Georgii (George's harp, created in 1781 to honour King George II of Great Britain; obsolete), Eridanus (also called Fluvius Eridanus, a river in Greek mythology), Cetus (the whale), Sculptor (originally called the sculptor's studio), Fornax (the furnace, originally called the chemical furnace), and Machina Electrica (the electricity generator; obsolete). For the full set of 32 cards, see V700/172-203.