Letters from various British and international observatories on filling vacancies, an enquiry into the transfer of Edinburgh Observatory, requests for new instruments, and the current state of work carried out at various centres. The correspondents include Sir H. Grubb, Lord Lindsay, C.P. Smyth, L. Mallet, Sir C.R. Markham, G.G. Stokes, N.R. Pogson, R.L.J. Ellery, W. De La Rue, C. Pritchard and F.A.T. Winnecke. There are numerous reports from observatories at Adelaide (1875), Dearbourne (Chicago), Edinburgh, Colaba, Madras, Mauritius (1875), Oxford and Sydney; plans of the new Vienna Observatory; and the report for the West India Meteorological Department. The papers also include newspaper articles on these observatories from 'The South Australian Advertiser', 'The Scotsman' and 'The Madras Times'; two photographs of Adelaide Observatory and two of Potsdam Observatory under construction; a reproduction of a photograph of Oxford University Observatory; and a presentation of a rain curve on recording paper.