Paper, 'An account of some experiments of light and colours formerly made by the President and mention'd in his Optics, repeated before the Royal Society' by John Theoph [Theophilus] Desaguliers Repeating experiments previously conducted by Sir Isaac Newton (FRS 1672). Comparing the effects of different colours of strung-up ribbons and glass prisms placed in front of a window as a light source. Includes a sketch of the experiment's setup. Subject: Physics Read to the Royal Society on 8 July 1714 Published in Philosophical Transactions as 'An account of some experiments of light and colours, formerly made by Sir Isaac Newton, and mention'd in his opticks, lately repeated before the Royal Society' 24 June 1714