Plate XII Silver Nitrate / Iron Sulphate / Lead Nitrate, 21 November 1926, Sun-Saturn Conjunction, 24.00 hours

Plate XII Silver Nitrate / Iron Sulphate / Lead Nitrate, 21 November 1926, Sun-Saturn Conjunction, 24.00 hours

Plate XII Silver Nitrate / Iron Sulphate / Lead Nitrate, 21 November 1926, Sun-Saturn Conjunction, 24.00 hours