Copy letter from Herbert Rix, to S B Atkinson, Tarltons, Cambridge Park, Wanstead, N.E. 'Dear Sir, In answer to your note of the 16th inst. [instant], there will be no tickets issued for the Croonian Lecture, but each Fellow has the right to introduce two visitors, which will be done by signature at the door. Yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 30 January 1894