The constellation Auriga lies east of Perseus and contains the bright star Capella, one of the three brightest stars in the northern hemisphere (the others being Arcturus and Vega). Theon, in his commentary on Aratus, says that Bellerophon invented the chariot, and that it is represented in the heavens by Auriga, the celestial coachman. According to Dupuis, Auriga represents Phæton, who tried to drive the chariot of the sun, and losing his head fell into the river Eridanus. The setting of Eridanus precedes by a few minutes that of Auriga, which was called by some of the ancient writers Amnis Phaï-tontis.[399] Auriga is called by Al-Sufi _numsick al-ainna_--He who holds the reins, the Coachman; also _al-inâz_, the She-goat. M. Dorn found in Ptolemy's work, the Greek name Ἡνιοχοι, Auriga, written in Arabic characters. Al-Sufi says, "This constellation is represented by the figure of a standing man behind 'He who holds the head of _al-gûl_' [Perseus], and between the Pleiades and the Great Bear." Capella is, Al-Sufi says, "the bright and great star of the first magnitude which is on the left shoulder [of the ancient figure] on the eastern edge of the Milky Way. It is that which is marked on the astrolabe as _al-aijûk_." The real meaning of this name is unknown. Schjellerup thought, contrary to what Ideler says, that the name is identical with the Greek word Αιξ (a goat). Capella was observed at Babylon about 2000 B.C., and was then known as Dilgan. The Assyrian name was _Icu_, and the Persian name _colca_. It was also called Capra Hircus, Cabrilla, Amalthea, and Olenia. In ancient times the rising of Capella was supposed to presage the approach of storms. Ovid says, "Olenia sidus pluviale Capellæ."