Dr Edith Bulbring, Department of Pharmaclogy, Oxford University Three letters, one to Bülbring, dated 12 August 1952, replying to a letter [not present] from Bülbring, dated 25 July 1952. Letter provides a detailed description of the 'condenser' and its parts. Second letter is dated 13 November 1958, from Bülbring, saying that she has returned to Dale the 'paper' she read and says that she has a few questions: 'One is that I can't find the Japanese paper. The reference is incorrect. Could you let me have the correct one?'. Third letter is dated 20 November 1958, to Bülbring, saying that the paper had arrived the day before and that Kosterlitz had added in her suggestions regarding the paper. Letter says that the quotation of the Japanese paper is correct, except the abbreviation, which Kosterlitz has altered. 1952 - 1958