The Hounds," or "the GREYHounds"), in astronomy, a constellation of the northern hemisphere named by Hevelius in 1690, who compiled it from the stars between the older asterisms Ursa Major, Bodtes and Coma Berenices. Interesting objects in this portion of the heavens are: the famous spiral nebula first described by Lord Rosse; a-Canum Venati-. corum, a double star, of magnitudes 3 and 6; this star was named Cor Caroli, or The Heart of Charles II., by Edmund Halley, on the suggestion of Sir Charles Scarborough (1616-1694), the court physician; a cluster of stars of the firth magnitude and fainter, extremely rich in variables, of the goo stars examined no less than 132 being regularly variable.