67 



Stated Meeting, May 3, 



Present, twenty-one members. 



Dr. Chapman, Vice-President, in the Chair. 



Drs. Carson and Norris, newly elected members, were in- 

 troduced to the presiding officer, and, having signed the con- 

 stitution, took their seats. 



Letters were announced and read: — 



From Count Jacob Graberg da Hemso, dated Florence, Jan. 

 15, 1844, acknowledging, as Chamberlain and Chief Librarian 

 of his Imperial and Royal Highness, the Grand Duke of Tus- 

 cany, the election of his Imperial and Royal Highness as a 

 member of this Society, and the thanks of his^Imperial and 

 Royal Highness for the donation of eight volumes of the 

 Transactions of the Society: — 



From Mr. Haldeman, dated Chicquesalunga, Pa., April 22d, 

 1844, acknowledging his election as a member of the So- 

 ciety: — 



From the Botanical Society of London, dated March 1, 

 1844, returning thanks for Proceedings of this Society: — ■ 

 and, 



From Professor Bache, dated Washington, April 25, 1844, 

 on transmitting a letter from Mr. Riimker, of Hamburg, re- 

 lating to computations of the elements of the comet discovered 

 by Mr. Mauvais. 



Elements of Mauvais' Comet. 



T = 1843, (May) 6.0232920 (Mean time, Greenwich). 

 Log. q = 0.2083948 



5r = 281 27 47.58 ) 



o irii 1 A r-i A^ C From the mean equinox 

 ef[ = \iu 14 51. 4o > ^ 



.= 52 44 0.98 ) ofJuly3d,1843. 

 Motion direct. 



Co-ordinates referred to the Ecliptic and the Mean Equinox of 

 July M, 1843, 



a; = 7- [9.9783885] sin [v+ 19 58 0.36] 



y=:r [9.8320335] sin [» + 269 30 33.0 ] 



z = T [9.9008179] sin [»-f 124 12 56.13] 



The quantities between the brackets are logarithms. 



