THE Astronomer Royal read his annual report to the Board of Visitors of the Royal Observatory, Greenwich, on June 6 last. Although the weather was far from ideal, the Garden Party which is associated with the visitation was well attended, and visitors and guests were shown the new Reversible Transit Circle referred to in the Report. The erection of this instrument was commenced in February and completed in March, but actual observations have not yet been made with it, as it was discovered by tests that the pivots were slightly elliptical in shape; in the meantime, work has been done on the pivots which it is hoped will shortly be circular within the required limits. This Transit Circle is in the Christie Enclosure, near the Yapp Reflector, and is accordingly some little distance east of the adopted Greenwich Meridian on which Airy's Transit Circle will continue to stand; the new instrument is reversible and has a travelling micrometer wire which is driven by an electric motor at the speed appropriate to the declination of the star under observation. It is intended to secure observations in fundamental astronomy which will be more accurate than those obtainable with the Airy's Transit Circle, and we may await with some interest the appearance of the results obtained with the new instrument.