«90 



Mr, Pond's Catalogue of Eighty-four 

 Capella. 



1812, June 15, 26, 28, July 7 

 8, 9, 10, 14, 20, 23 - 



July 28, 30, Aug. 13, 16, 17 

 19, 21. 1813, Jan. 2, 7, 8 



Jan. 10, 11, 16, 22, 24, 27, 28 

 31, Feb. 23, Mar. 1 



Mar. 2, 3, 5, 6, 7, 12, 17, x8 

 22, Apr. 8 - - 



Apr. 9. 10, 11, 13, 13, 14, 15 



17, 18, 20 - 



Apr. 21, May 28, 29, June 1 

 2, 20, July 4, 5, 6, 12 - 



July 15, 16, 17,22, 23, 25, 38 

 29» 5o> 31 - 



Aug. 3, 5, 6, 8,9, 10, 11, 13 

 i5> 17 - 



} 20,987 

 1 21,009 

 } 20,719 



}21,124 



\'^9SS7 

 } 20,258 



1 20,061 



Mean of 10 

 Mean of 20 

 Mean of 30 

 Mean of 40 

 Mean of 50 

 Mean of 60 

 Mean of 70 

 Mean of 80 



20,987 

 20,998 

 20,905 

 20,667 

 20,758 

 20,555 

 20,512 

 20,468 



One of the above series diifers a second from the mean of 

 the whole, a circumstance very unusual, but quite uncon- 

 nected with error of division, I attribute it to want of sufficient 

 care in reading off the microscopes. The mean result may, 

 nevertheless, be depended upon to a quarter of a second. 



