Correspondence and papers concerning new magnetic instruments and results of tests. There are papers regarding the annual examination of magnetic declinations; horizontal force magnets; damper experiments with the declination magnets; old vertical and horizontal force instruments; lists of dislocations of the vertical force magnets; new vertical force magnets; comparisons of the Greenwich photographic records with those at Kew Observatory; magnet thermometer line graphs; a new underground holding for magnets; notes on the temperature of the magnetic basement room; unifilar magnets; J.A. de Souza's report on the Kew Observatory; S. Toovey's azimuth dial; and improved glass and ebonite cylinders for photographic sheets. The correspondents include J.V. Lamont, W.H. Miller, J.P. Gassiot, C. Brooke and B. Stewart.