1848 Aug. 9 Explanation of a proposed construction of
                Zenith Sector:  addressed to the Board
                of Visitors of the Royal Observatory,
                Greenwich.

1848 Oct. 14 On the Construction of Chinese Balls Athenaeum.

1849 Description of the Instruments of Process
                used in the Photographic self-registration
                of the Magnetical and Meteorological
                Instruments at the Royal Observatory,
                Greenwich.

1849 Description of the Altitude and Azimuth
                Instrument erected at the Royal
                Observatory, Greenwich, in the year 1847.

1849 Astronomy. (Tract written for the
                Scientific Manual.)

1849 Mar. 9 Substance of the Lecture delivered by the R. Astr.  Soc. 
                Astronomer Royal on the large Reflecting (Month.  Not.)
                Telescopes of the Earl of Rosse and Mr
                Lassell.

1849 June On a difficulty in the problem of Sound.  Phil.  Mag.

1849 June 2 Report of the Astronomer Royal to the
                Board of Visitors.

1849 June 8 On Instruments adapted to the Measure of R. Astr.  Soc.
                small Meridional Zenith Distances. (Month.  Not.)

1849 Nov. 9 Results of the Observations made by the R. Astr.  Soc. 
                Rev. Fearon Fallows at the Royal (Memoirs.)
                Observatory, Cape of Good Hope, in the
                years 1829, 1830, 1831.

1849 Nov. 9 On Bell’s Calculating machine, and on R. Astr.  Soc. 
                Lord Rosse’s Telescope. (Month.  Not.)

1849 Nov. 10 On the Exodus of the Israelites.  Athenaeum.

1849 Dec. 14 On the Method of observing and recording R. Astr.  Soc. 
                Transits, lately introduced in America, &c. (Month.  Not.)

1850 Jan. 10 On a problem of Geodesy.  Phil.  Mag.

1850 Feb. 8 Address on presenting the Medal of the R. Astr.  Soc. 
                R. Astr.  Soc. to M. Otto von Struve. (Month.  Not.)

1850 Mar. 15 On the Present State and Prospects of the R. Inst. 
                Science of Terrestrial Magnetism.

1850 Mar. 16 On the Exodus of the Israelites Athenaeum.

1850 Mar. 30 On the Exodus of the Israelites.  Athenaeum.

1850 May 10 Statement concerning Assistance granted R. Astr.  Soc.
                by the Admiralty to Hansen—­Also on (Month.  Not.)
                Henderson’s numbers for the teeth of
                wheels.

1850 May 10 On the Weights to be given to the separate R. Astr.  Soc. 
                Results for Terrestrial Longitudes, (Memoirs.)
                determined by the observation of Transits
                of the Moon and Fixed Stars.