Copy letter from Herbert Rix, to Hugh Longbourne Callendar, 2 Princes Mansions, Victoria Street, S.W. Callendar's paper falls due on 18 December and was announced yesterday. It can doubtless be deferred if Callendar prefers, but there is no meeting until 8 January. It would delay publication of the abstract by about three to four weeks. Rix asks Callendar to telegraph his decision as he needs to know by tomorrow. A box has come from Cambridge for Callendar. The packers say the eye-piece of the microscope was missing when they received it from Callendar. 12 December 1890