286 



Mr. Pond's Catalogue of Eighty-four 

 /S Cephei. 



1812, Oct. 22, 24, 26, 29, 31 

 Nov. 3, 4, 21, 22, Dec. 5 



Dec. 8, 9, 13. 1813, Mar. 16, 

 20, Apr. 1,2,3, ^> 14 



Aug. 11, 12,13,15, 16 17, 19, 

 20, 22, 23 - 



Aug. 24, 25, 26, 30, 31, Sept. 2, 

 3> 4» 5. ^ 



} 30.574 

 } 30.34s 

 } 30,985 

 130,894 



Mean of 10 

 Mean of 20 

 Mean of 30 

 Mean of 40 



30,574 

 30,458 

 30,634 

 30,699 



This result is probably exact to a quarter of a second. 



a Vrsce Major. 



1812, June 13, 29, July 9, 10, 

 15, 30, Aug. 14, Oct. 1, 2,3 



Oct. 4, 6, 14, 15, 18, i^y 20, 33, 

 27, 28 - 



Oct. 30, Nov. 4, 5, 9. 1813, 

 Mar. 23, 26, 29, 31, Apr. 2,3 



Apr. 4, 7, 8, 9, 10, 18, 13, 14, 

 20, 26 - 



May 24, 26, 31, June 1, 7, 8, 

 9,11,16,25 



June 26, 27, July 6, 10, 18, 20, 

 a5, 30, Aug. ^,6 



} 31.500 



} 31 .535 

 } 31 731 

 }3i>i«4 

 } 31.279 



Mean of 10 

 Mean of 20 

 Mean of 30 

 Mean of 40 

 Mean of 50 

 Mean of 60 



31^500 



31.54S 

 31.540 

 ji,588 



31.495 



This result seems to be extremely exact, and probably does 

 not differ more than one-tenth of a second from the truth. 



Exact to a quarter of a second. 



