338 Proceedings of the Royal Irish Academy. 



1^0. 201. o^ Cai^is Majoeis. — 4 m. Lalande ; 5 Lacaille ; 4-5 

 Argelander ; 5 m. Heis (00 = 3-4) ; 4-5 Behrmann (0^= 4-0) ; 4-36 Sir 

 J. Herschel (o2 = 3-75) ; Sir W. Herschel gives 22, 16 (o^), 28 ; 5 Cape 

 Cataloffue (187 8- 11). It i^'Eo.lbl oi Birmingham'' s Cataloyue. Sclimidt 

 called it " veiy red," and Gould "orange-red." The difference be- 

 tween the magnitudes of o^ and o^ as given by Sir J. Herschel is 0-61, 

 by Heis 1"66, and by Behrmann only 0'33, a considerable discrepancy. 

 The Cordoba estimates of magnitude vary from 3'8 to 4"2 ; Franks 5 m. 

 December 31, 1877 ; on Maix-h 4, 1883, I found 0^ = 1^ and at least 

 one magnitude fainter than o- (3*4 Gould). 4-04 H.P. 



'Bo. 202. TT^ (19) Ca^-is Majoeis.— 5 m. Lalande (13452) ; 6-5 

 Argelander and Heis; 5-5 Johnson (1854); 4*9 at Cordoba. Dr. 

 Gould says, "It seems evident that the brightness of this star has 

 increased" {U. ^., p. 305). In January, 1876, I found it slightly 

 brighter than tt^ (15). 4-45 H.P. 



ISTo. 203. e Cajs^is Majoeis. — 3 m. Sufi, Lacaille and Harding; 

 2"1 Argelander and Heis ; 1-86 Sir J. Herschel (mean of 16 estimates, 

 Ca2)e Ohservations, p. 344); 1*8 Gould; 3m. C'ff_/;e Catalogue {181 b'12). 

 Its low meridian altitude in the sky of central Europe may account 

 for its being underrated by Harding, but it is not so easy to under- 

 stand why it should have been rated only 3 m. by Lacaille, who ob- 

 served it at the Cape of Good Hope. 1"49 and 1*7 H.P. 



In January, 1876 (Punjab), I found it certainly 2 m., but not much 

 brighter than S. 



1^0. 203a. LALAJfDE 13627 Hoj^-oceeotis. — 6 m. Lalande and Hard- 

 ing; 6 Heis; 5-6 Gould; 5-8 Pranks, March 25, 1884. Suspected 

 variable by me, Pebruary 17, 1884, when I found it only 6'lm. ; 

 numerous observations in Pebruary and Harch, 1884, vary from 5'5 

 to 6-1. 



jSTo. 204. o- (22) Caxis Majoeis. — A red star; suspected variable by 

 Gould; he calls it " excessively red." It was rated 4 m. by Lacaille, 

 Harding and Heis; once 5m. by Argelander; 4-5 Behrmann; 5-4 

 Schmidt ("very red"); 3-92 Sir J. Herschel {Cape Ohs., p. 347). 

 The Cordoba estimates vary from 3-5 to 4-2. In Pebruary, 1875, I 

 estimated it 4|- m. ; January 22, 1876, very slightly brighter than o^ 

 (5 m. Heis); Pebruary 3, 1883, about two steps brighter than o^ 

 Both stars red. 3-49 H.P. 



ISTo. 205, I9.M0NOCEEOTIS. — 5m. Lalande (13658); 5 m. Harding; 

 6m. Argelander; 6-5 Heis. The Cordoba estimates vary from 5*4 to 

 5-8 ; 6 m. Pranks, December 31, 1877 ; 5-6 Cape Catalogue (1879*1 1). 

 About 8' /is the star 2307 B A C (=LL 13678), which has also been 

 suspected of variation {Memoirs R.A.S., vol. xsi.) It is 8^m. in 

 Lalande' s Catalogue ; 8 m. Harding and Piazzi. With reference to this 

 star Gould says : — " The supposition of variability may have arisen 



