Copy letter from Herbert Rix, to Messrs Drake & Gorham, 2 Princes Mansions, S.W. Rix sends word that at one of their Soirées, either on 6 May or 17 June, Professor Walter Weldon, University College, is to exhibit a trough of living fish. Weldon has specified the need for six eight candle lamps, separated by a foot from each other, and Rix asks if these can be on one circuit, as that would be Weldon's preference if it could be arranged. 10 April 1891