Aslronom ical Society. S 1 J 



The discovery of any new Planet, Satellite or Comet ; or 

 the re-discovery of any old Comet, or of any Stars that have 

 disappeared. — Observations to elucidate the existence of Pa- 

 rallax in the Fixed Stars. — A considerable collection of ori- 

 final and well authenticated observations of the Eclipses of 

 upiter's Satellites, or of Occultations of the Stars by the Moon, 

 reduced to the mean time of any known Observatory. — The 

 like, on the positions of the Fixed Stars, and Nebulee ; tending 

 either to the enlargement and perfection of our present cata- 

 logues, or to the more accurate determination of variable stars 

 in size, colour, or situation, as well as the perfection of our ca- 

 talogue of double stars, with the determination of their di- 

 stance, and angular position. — A development of the operation 

 of Refraction, with a view to the more perfect theory of that 

 phaenomenon; particularly at low altitudes, where irregularities 

 take place when little or no variation has occurred in the Ba- 

 rometer or Thermometer. — Observations on the Tides, parti- 

 cularly in situations where the current is not influenced by lo- 

 cal formation or any contiguous Continent. — Observations 

 tending to determine the true figure of the Sun or of the Earth, 

 and other planets. — The reduction of any well authenticated 

 observations. — The formation of moie simple and easy Tables 

 than now exist, for the reduction of astronomical observations. 

 — The formation of new Tables for the more recently disco- 

 vered Planets, together with those of Jupiter's Satellites. — 

 Inquiries into the labours and observations of preceding astro- 

 nomers, and of the instruments they used, with a view to dis- 

 cover whether any records can be found of the more recently 

 discovered Planets or Comets, and to obtain a more perfect 

 catalogue dian now exists of such stars as have from time to 

 time disappeared. — A comparison of the places of any of the 

 celestial bodies, as observed at any of the principal Observa- 

 tories, wirii their places deduced from the most approved Ta- 

 bles ; but more particularly those of the Moon. In this latter 

 case, it would be desirable that the immerical value of the ar- 

 guments of die principal equations should be annexed to each 

 comparison ; and that in all cases, the principles on which the 

 deductions are made should be fully and clearly stated. 



Among the instrumental improvements may be mentioned 

 the perfection of tlie Achromatic Telesco))e, by experiments 

 on die formation of better glass and its powers. A simple but 

 efiectual contrivance for enabling an observer to determine the 

 right ascension and declination of small stars, without illumi- 

 nating die wires ui die field of die Telescope. — An Instrument, 

 or ratner means, for determining the apparent magnitude of the 



fixed 



