Saturn as seen with a newtonian equatorial of thirteen inches aperture, March 27th and 29th 1856 (titre original)

Mars, as seen at Madras on the Lerebours Equatorial […] on 18th and 23rd March 1854 (titre original)

Saturn as seen with a newtonian equatorial of thirteen inches aperture, March 27th and 29th 1856 (titre original) / [2 images]