Scope and Contents Correspondence on new techniques, requests for advice and new instruments. There are requests for transit circles from the Portuguese government, Upsala, Sweden, and Albany, U.S.A.; a description by Airy of the Greenwich transit circle; experiments with mercury and photography, including two early pictures of the Sun; improved sextants and clocks; a 'universal instrument'; and an account of the instruments used by the ancient Chinese astronomers. The correspondents include E. Dunkin,...

Scope and Contents Letters from various British and international observatories on filling vacancies, with enclosed testimonials; the foundation of a new observatory in Hong Kong; work at Indian observatories; covering letters to reports; and observatory reports. The correspondents include J.L.E. Dreyer, E.J. Stone, C. Pritchard, Earl Rosse, Sir H. Thompson, E.J. Cooper, W. Spottiswoode, L. Mallet, N.R. Pogson, T.H. Huxley, E. Dunkin, O. Struve, G.G. Stokes, Earl Portsmouth, R.S. Churchill, Earl Kimberley,...