108 



Walker from 



Walker 



from 



Rumker's 



Peters 



' co- 



equations. 



ordinates. 



h. m. s. h. m. 



s. 



5 8 13.83 5 8 



13.45 



5 1 16.53 5 1 



15.05 



5 40.615 



40.94 



5 38.89; 5 



39.60 



4 53 41.114 53 



42.05 



4 51 12.89 4 51 



1325 



not reduced. 



4 45 



38.33 



>J 



4 44 



16.92 



Mr. Walker having previously reduced the American observations 

 with Peters's co-ordinates and corrections, furnishes a comparison of 

 the longitudes from Greenwich, derived by different computers from 

 this eclipse. 



Washington (Capitol,) 



Haverford School, Delaware Co., Pa. 

 Germantown, C. Wister's private Observatory, 

 Philadelphia, (State House) .... 

 West Hills, (Coast Survey,) - 

 Southwick, Mass., A. Holcombe's p. Obs. 

 Providence, Brown University, - . 



Dorchester, Mass., Wm. C. Bond's p. Obs. 



Mr. Walker finds from the resolution of Rumker's equations of 

 condition, -\- 1".516 for the correction of Burckhardt's constant of 

 the moon's equatorial parallax. In the Memoirs of the Astronomical 

 Society, Vol. X., Mr. Henderson gives -(- 1".5 as the value of this 

 correction, derived from Plana's Theorie de la Lune, and + 1".3 as 

 the value of the same, derived from a discussion of all the meridian 

 observations of the moon made in 1832 and 1833, with the mural 

 circles at Greenwich, Cambridge, and the Cape of Good Hope. This 

 correction had hitherto been derived chiefly from theory and meridian 

 observations. It is seldom that an eclipse or occultation has been so 

 extensively observed as to furnish a determination of this element. 

 In the present instance, the results by the three independent methods, 

 present a close agreement. 



Dr. Chapman, one of the Vice-Presidents of the Society, 

 stated that he had received a letter from the Prince of Musig- 

 nano, informing him that a meeting of the scientific men of 

 Italy would be held at Pisa, in October next, and inviting the 

 Society to send a delegate to the meeting. 



Dr. Patterson communicated the decease of Mr. Francis 

 Nichols, a member of the Society, on the 7th of July. 



Dr. Bache also announced the decease of Dr. John Newnam, 

 formerly of Salisbury, N. Carolina, a member of the Society. 



The following candidates were declared duly elected mem- 

 bers of the Society: — 



Theod. Romeyn Beck, M. D., of Albany. 



Richard 0. Taylor, of Philadelphia. 



