Correspondence with various United Kingdom and Republic of Ireland observatories and universities, including Professor P.A. Sweet of the Department of Astronomy, University of Glasgow; M.V. Ovenden, University of Glasgow; H.A. Brück, Astronomer Royal for Scotland, of the Royal Observatory, Edinburgh; Professor D.W.N. Stibbs of the University Observatory of St Andrews; T. Rackham of the Department of Astronomy, University of Manchester; P.A. Wayman of the Dunsink Observatory, Co. Dublin; Professor S.K. Runcorn of the Department of Physics, University of Newcastle-upon-Tyne; Professor J. Ring of the H.H. Wills Physics Laboratory, Bristol; E.M. Bettenson of the University of Newcastle-upon-Tyne; D. McNally of the University of London Observatory; Queen Mary College, London; J.D. McGee of Imperial College, London; and R. Burcher of the Senate House, University of London.