Plate XV Silver Nitrate / Iron Sulphate / Lead Nitrate, 22 November 1926, Sun-Saturn Conjunction, 23.00 hours

Plate XV Silver Nitrate / Iron Sulphate / Lead Nitrate, 22 November 1926, Sun-Saturn Conjunction, 23.00 hours

Plate XV Silver Nitrate / Iron Sulphate / Lead Nitrate, 22 November 1926, Sun-Saturn Conjunction, 23.00 hours