Correspondence regarding admissions to visit the Royal Observatory. The volume is divided broadly into requests by the Admiralty to visit the Royal Observatory, introductions on behalf of visitors, personal requests to visit the Observatory, and instructions to assistants on receiving guests. The correspondents include F.J.O. Evans, G.H. Richards, R. Hall, T.H. Stafford, A. Cayley, J. Glaisher, F.N.M. Moigno, O. Struve, E.J. Routh, T.A. Hirst, F.A.T. Winnecke, W. Spottiswode, E.J.A. Gautier, G. Rümker, S.J. Perry, W.J. Foerster, A.V. Auwers, W.H.M. Christie, R.J. Mann, S. Newcomb, G. Davidson, C.C. Bruhns, E. Dunkin, R. Grant, W.H. Barlow, W.H. Noble, S.H. Walpole, E. Hammond, J. Mackintosh, J. Bennett, W.H. Hall, E.H. Bruns, H. Debus, F.T.V. Frerich, H. Wild, E. Singleton, H.K. Vogel, C.S. Lyman, H.S. Palmer, H.V. Regnault, T.M. Gibson, A.C. Key, L.F. Knapp, E.W. Hilgard and J. Hope.