148 
Proceedings of the Hoijal Irish Academij. 
Ts^o. 103. S Corona. — Maxima were observed by Baxendell, 1886, 
April 28 ; aud by Sawyer, 1885, May 11 ; 1886, May 10 ; and 1887, 
A^ml 19 (mag. 7-1). 
]S"o. 121. g (30) Heecflis. — Prom observations in 1887, Sawyer 
finds periods of 62-86 days. 
No. 130, U Ophiuchi. — Chandler gives the following elements': — 
Min. = 1884, January 1, 0^ 54"^ 43»-6 (Paris, M.T.) 
+ 20" 7'" 4P-6 (E - 1070) - 0^-0002 E^. 
(Gould's AstronomicalJournal, Nos. 161 and 162). 
No. 138«. — Serpentis = DM 4 8°, 3780.— The following maxima 
have been observed by Espin : — 1886, June 8 ; 1887, April 14 ; and 
1888, February 18. 
No. 153. S YuLPECUL^. — The maximum and minimum given in the 
Catalogue were observed by Baxendell. 
No. 155^1. S (10) Sagitt^. — Sawyer finds a correction to Chandler's 
epoch of maximum of -0''-29, and to the period a correction of -O'^'Oe. 
No. 155 h. — Cygni. — In May, 1888, Espin found this star below 
13 mag., and showing no signs of increasing in light. 
No. 156. S Ctgni. — The maximum given in the Catalogue was 
observed by Knott. 
No. 158. S Aquil^. — The maximum and minimum given in the 
Catalogue were observed by Knott. 
No. 170^. — Cygni. — The period of this Algol star has now been 
proved to be 1M2^ ±. 
No. 175. T Cephei. — Treating Mr. Knott's observations of minima 
by the method of least squares, I find the following provisional 
elements : — 
Epoch minimum = 1884, Augubt 29-5 + 387-92 E. 
