Magnetic and temperature curves from observations made at the Madras Observatory, India, by Samuel Owen Edgar Ludlow Graphical representations of term day readings of the declination, bifilar, and vertical force magnetometers at Madras [Chennai]. Together with curves for temperature, taken from the thermometers attached to the horizontal and vertical force magnetometers [also referrred to here as bifilar and balance magnetiometers]. Presented on monthly printed sheets for observations commencing on 18 January, 24 February and 22 March [Gottingen mean time]. Each sheet is signed by S.O.E. Ludlow, as Superintendent of the Observatory. Inscribed [p.2]: 'Term Day Curves Jan-Mar 1843'. 18 January-22 March 1843