368 Scientific Intelligence. 



Mr Innes. Mr Gordon. 



Time of Perihelion Passage, 1824, Sept. 29th ) 

 Mean Time at Paramatta, J 



Long, of Perihelion - - 4° 23' 12" 4° 22' 11" 



Long, of Ascending Node - - 279° 17' 56" 279° 19' 13" 



Inclination of Orbit - 54 22 14 54 22 22 



Perihelion Distance - - 1.048553 1.048739 



Motion direct. 



3. New Comet of 1825. M. Gambart of Marseilles discovered, on the 

 19th May 1825, a small comet in the head of Cassiopeia, about h 20' of 

 right ascension, and 48° 22' of north declination. On the 1st of June at 

 12 h 31' its right ascension was l h 51', and its declination 73° 39' north. 

 This comet appeared as a small nebulosity of about two minutes in dia- 

 meter. It is round and well defined. Its light is evidently condensed at 

 its centre ; but M. Gambart could not see distinctly its nucleus, or the 

 part which is separated from the nebulosity. 



4. Longitude and Latitude of Paramatta. The position of the Obser- 

 vatory at Paramatta, as corrected by numerous and recent observations, is 

 East longitude from Greenwich, 10 h 4' />", and South latitude 33° 48' 45". 



5. Action of the Moon nn the Earth's Atmosphere. From a series of 

 4752 observations made on the barometer, between the 1st October 1815, 

 and the 1st October 1823, M. Laplace has concluded, that the magnitude 

 of the lunar atmospherical tide is about the 18th part of a millimeter, 

 or about the ^i-^th part of an English inch. 



6. Lunar Eclipse of 3\st May, observed at Bushy Heath. Colonel 

 Beaufoy observed the beginning of the eclipse, at ll h 52' 43", mean time, 

 and the end at 12 h 15' 58". The shadow was ill defined. The longitude 

 of his observatory is V 20".9S west, mean time, and 51° 37' 44".3. — Ann. of 

 Phil. July 1825, p. 44. 



or-Tics. 



7. Light produced during the Crystallization of Benzoic Acid. M. 

 Buchner of Magonza having mixed impure, but perfectly dry, benzoic 

 acid with the sixth part of its weight of pulverized charcoal, left it exposed, 

 for several days, to a moderate heat, the mixture being covered with a cy- 

 linder well luted with a paste of almonds, but having a small aperture 

 left on purpose to see the crystallization within. Having been exposed, 

 for several days, to a moderate heat, the crystals had already begun to 

 form, but being desirous of hurrying the operation> M. Buchner placed 

 the apparatus in a stove of a high temperature. In the space of half an 

 hour he was surprised to see a brilliant flash of light within the cylinder, 

 the brightness of which was augmented by the darkness of the room. A 

 number of similar flashes immediately succeeded, and continued for half 

 an hour. M. Buchner now found that a great quantity of crystals of ben- 



