Copy letter from Herbert Rix, to Professor William Mitchinson Hicks, Fellow of the Royal Society The Society's continuous current has a voltage of 100. They are arranging for an alternate current from an outside source; the periodicity of which will be 83.3 periods per second. The rooms are open to Hicks from 10am to 6pm. Professor Fleming is exhibiting somewhat similarly to Hicks. 26 April 1895