adventures-of-the-blackgang: Sir James Clark Ross - beside him is a dip circle designed by Robert Were Fox, and used by Ross to discover the magnetic south pole. Artist: Wildman, John R.; 1834
adventures-of-the-blackgang: Sir James Clark Ross - beside him is a dip circle designed by Robert Were Fox, and used by Ross to discover the magnetic south pole. Artist: Wildman, John R.; 1834
