454 Analyses of Books, [Dec. 



Perturhatiotis des Planhes expos^e dans la M4canique Celeste, 

 Par M. Plana. 



XXIII. Mr. John Ramoge's Description of his large Refecting 

 Telescopes. (With Plates.) 



XXIV. On Parallaxes. By J. J. Littrow, Director of the 

 Imperial Observatory, and Professor of Astronomy at Vienna, 

 Associate of the Astronomical Society of London, &c. 



XXV. On the Co-latitude of the Observatory of Stephen 

 Groombridge, Esq. at Blackheath ; determined by his own Obser- 

 vations ofCircumpolar Stars , reduced by the Constant of Refrac- 

 tion 58^ 133 at 45°. 



XXVI. Observations of the Eclipses of Jupiter^ s Satellites, 

 made at Futty Ghur, on the Ganges (JSi. Lat. 27° 2V 35'') in 

 1824-5. By Major J. A. Hodgson, Revenue Surveyor General. 

 Communicated in a Letter to the Secretary of the Astronomical 

 Society. 



XXVII. A Comparison of Observations made on Double Stars. 

 By Professor Struve. Communicated in a Letter to J. F. W. 

 Herschel, Esq. Foreign Secretary of this Society. 



XXVIII. Observations of the Occult ation of Saturn on the 

 20th October, 1825. By R. Cornfield, Esq, and J. Wallis, Esq. 

 Communicated in a Letter from the former to Dr. Gregory, 

 Secretary of the Society. 



XXIX. Account of some Observations made with a 20'feet 

 Reflecting Telescope. By J. F. W. Herschel, Esq. For. Sec. Ast. 

 See : comprehending, 



1. Descriptions and approximate Places of 321 new Double a7id 

 Triple Stars. 



2. Observations of the second Comet of lS2b. 



3. An Account of the actual State of the Great Nebula in 

 Orion compared with those of former Astronomers, 



4. Observations of the 'Nebula in the Girdle of Andromeda. 



XXX. Explanation of the Method of observing with the two 

 Mural Circles, as practised at present at the Royal Observatory of 

 Greenwich. By John Pond, Esq. Astronomer Royal. 



XXXI. Extracts from three Letters, addressed by M. Gambart, 

 Director of the Royal Observatory at Marseilles, to James South, 

 Esq. MAS. respecting the Discovery, and Elements of the Orbit, 

 of a Comet, which appears to be the same with that of 1772 and 

 1805. Communicated by James South, Esq. 



XXXII. Report of the Committee appointed by the Council of 

 the Astronomical Society of London, for the purpose of examining 

 the Telescope constructed by Mr, Tulley, by Order of the Council.* 



XXXIII. Micrometrical Observations of the Planet Saturn, 

 made with Fraunhofer's large Refractor, at Dorpat. By Prof. 

 Struve, Associate of the Astronomical Society of London. 



XXXIV. Summary of the Observations made for the Deter^ 



« See AnnaU,'S<{, S. yol. xi. p. 440. 



