Details of optical experiments made at the Royal Society in August 1728 Discussing work by John Rizetti and Newton on optics Nine experiments were carried out - those present were Hans Sloane, J Scheuchzer, Mr Grey, Mr Georges, Mr Dugood, Colonel Spotswood, Mr Haily, Mr Graham, Abbot Lercari, Abbot Cuzzoni and Abbot Rolli and his brother Engraving from 'Philosophical Transactions' attached 1728