Account of some electrical experiments by Stephen Gray, transcribed by Cromwell Mortimer Details of three experiments from Gray which he had been unable to carry out because he had fallen ill. Mortimer states that Gray hoped that he could develop a theory of the motion of the planets. Mortimer gives his results of these experiments which showed that a cake of rosin would attract the light body Printed in 'Philosophical Transactions', vol 39, no 444, p 400 14 February 1736