Copy letter from Herbert Rix, to Captain William de Wiveleslie Abney, Fellow of the Royal Society Rix has no doubt the Society can arrange for Abney to have 12 amperes of current. As however they have other electrical exhibits [at the Soirée] they wonder if perhaps Abney can let the Society know early the kind of space required and general arrangements. A form for entering these particulars is enclosed. 17 April 1893