424 Proceedings of the Royal Irish Academy. 



IS^OTES L'ED OBSEEYATIOIS'S. 



IS'o. 737. (= Lacaille 9732). — Q^ Lalande and Lacaille ; 6 Harding; 

 not given by Argelander or Heis ; 6 m. Behrmann; estimated 5-9 m. 

 at Cordoba; but measured only 7*29 at Harvard (H.P. 2). 



1^0. 741. B 96.-6i and 7 Laxakde (9581-2) ; 6 and 7 m. Birming- 

 ham ; 8 Webb; 6-6 (lould ; March 9, 1885, estimated 7-0. 



IS^o. 742. IS^t mentioned by Sufi ; 5 m. Lalande ; 6-5 Heis ; 4-92 

 and 5-1 H.P. On April 13 and 20, 1884, I found /a = A Aurigse, and 

 1 step brighter than cr ; Sept. 13, /x = X. 



jS^o. 743. 6 m. Heis ; 5-38 Peii'ce ; 5-14 H.P.; and 5-8 " est." 



J^o. 744. A companion to this star (86°-5 : 12"" 12) is suspected of 

 variation. 



JN'o. 748. 15 lIois'ocEEOTis. — A companion to this known variable 

 star (139°-2 : 75"'7) has been suspected of variation. It was esti- 

 mated 8-5 m. by Main (1863-16), but only 12 m. by Sadler (1875-3). 



JS^o. 752. March 25, 1884, equal to its neighbour D.M. 33°, 1898, 

 or 6-8 m., but in a photograph taken by Espin on May 19, 1884, only 

 7-7 m. "A third photograph was taken a few nights later, when the 

 star had apparently regained its previous brilliancy." It is Lalande 

 18957 (8 m.). iS'ot in Harding'' s Atlas. 



Xo. 755. 4m. Lalande (25113) ; 5 Harding; 5 Heis; 5-5 Gould; 

 5-15 and 5-3 H.P. 



K'o. 756. A double star; relative brightness of components variable 

 according to Stmve. 



JS'o. 757. Nature, June 5, 1884. Position for 1885-0. 



Iv^o. 759. A well-known double star; one of the components pro- 

 bably variable (see Southern Stellar Objects, p. 64). 



S'o. 760. 4-3 Sufi; 3-4 Argelander; 3 Heis and Houzeau; 3-0 

 D.M. ; 3-60 Pritchard (1882-376) ; 3-36 and 3-2 H.P. June 6, 1875, 

 I found TT about equal to C Herculis ; Sept. 22, 1875, tt distinctly 

 brighter than e, but not quite equal to t, Herculis. 



Xo. 761. 4-84 Pritchard (1882-731); 4-52 and 4-3 H.P. I found 

 it = T Draconis, March 4, 1884. 



