146 
Proceedings of the Bmjal Irish Academy. 
I^OTES ADDED IN THE PRESS. 
1^0. 7. TJ Cephei. — Knott's period is 2*492857 days. Schmidt 
gave 2*492886 days. {^Ohservatory^ December, 1880.) A minimum 
was obseiTed 1887, February 25, 8^ 34"^ 5^ 
1^0. 33. S Auriga. — Maxima were observed by Duner, 1885, 
February 12 ; and 1886, March 7 (mag. 9-5). Variation irregular, or 
law very complicated." 
No. 37. a Oeionis (Betelgeuse). — A well-marked minimum 
occurred about the middle of December, 1887. 
No.37^. U (''Nova")ORiONis. — This star rose to another maximum 
in December, 1887, but did not much exceed 7*5 magnitude at this 
maximum. 
No. 39. T MoNOCEROTis. — Sawyer observed the following maxima 
and minima in 1887-88. (Gould's Ast. Journal, No. 174.) 
Observed Maxima. 
1887, November 29, 16'^ 50"\ 1888, February 20, 10*^ IS'". 
1887, December 27, 10^ 53'". 1888, March 17, 12" 2'". 
1888, January 23, 9" 55'". 1888, April 13, 23'' 51'". 
Observed Minima, 
1887, November 20, 2'' \%^. 1888, February 9, 9^ 31'". 
1887, December 20, 7" 16'". 1888, March 6, 8" 48'". 
1888, January 14, 19" 10'". 1888, April 4, 3" 3"\ 
No. 41 . S (15) MoNOCEEOTis.— A distant companion at 139°-2 : 75"-7 
has been suspected of variation, as it was estimated 8*5 by Main 
(1863-16), and only 12 m. by Sadler (1875-3). Tarrant's observations 
in March and April, 1888, show it to be certainly variable to the 
extent of at least \^ mag. This object deserves careful attentioii. 
as a variable companion to a known variable star is very rare, if not 
an unique phenomenon. 
