6 ButherfunVs Photographic Plates. 



— Cygni, 

 a = 20 11 [ 1875. Sept. 27 (three), 29 ; Nov. 8 (two). 

 *=4-31° 53'. 



— Cygni, 

 tt = l<Jh 38'". 1- 1876. June 6 (four). 



* = +27° 7' 



— Cygni, 

 a = 19 h 38 m . j- 1876. June 7 (two) , 14 (two). 

 * = 4-40°. 



x Cygni. 1875. Sept. 20, 21 (three), 23 (two), measured 1876. 



n Cygni, 11875. July 21, 24 (two) ; Aug. 6 (two) ; Sept. 23 (three), 



21 Cygni. J 24 (two), 27 (two). 



1876. June 1 (four), 19, 21 (three) ; Dec. 3 (two), 5 (two). 



— Cygni, \ lg75< gept> 24 ( three ) . 0ct# 12 , 13 (two). 



B. A. C. 6986. J 



27 Cygni. 1874. Nov. 12, 14. 



B. A. C. 6915. 1875. Oct. 20 (two). 

 1876. June 21 (four). 



34 Cygni. 1875. July 19 (three) ; Oct. 2 (three). 



1876. June 15 (four). 



37 Cygni. 1875. July 19 (three) ; Oct. 20 (three). 



1876. Nov. 29 (two); Dec. 3 (two), 31. 



58 Cygni. 1875. July 30 (three) ; Nov. 11 (two). 



1876. June 22 (two); July 14 (two); Nov. 12 (three), 

 16 (two). 



59 Cygni. 1875. August 5 (three) ; Nov. 11. 



1875. Nov. 17, 22, 24 (near 59 Cygni). 



1876. July 22, 24; August 4 (two); Nov. 12 (two), 



16 (three). 



61 Cygni. 1871. Nov. 9, 12 (two). • "] 



1872. Nov. 29; Dec. 15 (two),' 17. I Measured 



1873. Nov. 15 (two), 20, 22 (three). [ 1874 and 



1874. June 1 (two), 12, 13 (two) ; illegible | 1875. 



date (two). J 



1876. July 17 (four). 



71 Cygni. 1875. August 5 (three) ; Nov. 24, 25, 27. 



1876. July 27 (two) ; August 5 (two) ; Nov. 24 (three), 

 28, 29 (three) ; Dec. 5 (two). 



