1826.] Memoirs of the Astronomical Society , Vol. II. Part I. 283 



On the Method of determining the Difference of Meridians, hy 

 the Culmination of the Moon. By Francis Baily, Esq. 



Oh the Utility and probable Accuracy of the Method of deter- 

 mining the Sun's Parallax by Observations on the Planet Mars 

 near his Opposition. By Henry Atkinson, Esq. 



On the Corrections requisite for the Triangles which occur in 

 Geodesic Operatiotis. By Captain George Everest. 



On the Rectif cation of the Equatorial Instrument. By Prof. 

 Littrow. 



On the Variation in the Mean Motion of the Comet of Encke, 

 produced hy the Resistance of an Ether. By M. Ottaviano 

 Fabrizio Mossotti. 



Observations of the Solstice in June, 1823, made at Paramatta, 

 New South Wales. Communicated by Sir Thomas Brisbane. 



Observations made in the Years 1823-4 at Paramatta, New 

 South Wales. Communicated by Sir Thomas Brisbane. 



On a neio Instrument, called the Differential Sextant, for mea- 

 suring small Differences of angular Distances. By Benjamin 

 Gompertz, Esq. the Inventor. 



Observations on some singular Appearances attending the Occtil- 

 t at ion of Jupiter and his Satellites on, April 5, 1824. By Mr, 

 Raraage, Capt. Ross, and Mr. Cornfield. 



Observations on the Occultation of the Herschel Planet on 

 Aug. b', 1824. By Capt. John Ross. 



An Account of the Arrival and Erection of Fraunhofer's large 

 Refracting Telescope at the Observatory of the Imperial University 

 at Dorpat. By Prof. Struve. 



On a new Zenith Micrometer. By Charles Babbage, Esq. 



The Results of Computations on Astronomical Observations 

 made at Paramatta, in Neio South Wales, under the Direction of 

 Sir Thomas Brisbane, and the Application thereof to investigate 

 the Exactness of Observatio)is made in the Northern Hemisphere. 

 By the Rev. John Brinkley. 



A short Account of a new Instrument for measuring Vertical 

 and Horizontal Angles. By George Dollond, Esq. 



Observations made at Bushey Heath, from May 17, 1816, to 

 Dec. 1, 1824. By Col. Beaufoy. 



On Astronomical and other Refractions ; ivith a connected 

 Inquiry into the Law of Temperature in different Latitudes and 

 at diferent Altitudes. By Henry Atkinson, Esq. 



A Report on the Projiercies and Powers of a new 3-feet Altitude 

 and Azimuth Circle, lately fixed at the Rectory-House of South 

 Kilioorth in the County of Leicester: — constructed by Edward 

 Troughton, and divided by T. Jones. Drawn up by the Rev, 

 William Pearson. 



Observations made at Paramatta, in New South Wales, by 

 Myor-General Sir Thomas Brisbane. To which are annexed 



