S. W. Burnham—Double-Star Discoveries. 35 
stars with the early observations of Herschel, would seem to 
indicate considerable change, but this is not confirmed by the 
intermediate measures of Otto Struve. 
Herschel A and C caniey op D=138""90 1783°8 
O. Struve A and C 169°4 13°86 1848°3 
Herschel —- A and E 49-4 25°97 (1783°8 
O. Struve A and E 45°3 29°00 (1848°3) 
The close agreement between the measures of O, Struve and 
Dembowski accords with my own results on the occasion of 
observing the new companions, when the angles came out 
170°, and 44°-9, respectively. 
No. 450=B. A, C. 7931 
R. A.=22" 38™ 40" 
Decl.=-+38° 50’ 
As a double, this beautiful object is found in the catalogues 
of both Struves, and Herschel (=> 2942= O2 478=H 1802). 
Struve’s magnitudes are 7-0 and 9-2. The colors are very strik- 
ing, the larger being, according to Struve, reddish gold, and the 
smaller, ash-color. A third much smaller star was discove 
with the 184 in., and measured once as below 
A and B P==982°4 =2"°66 1831°6) 
A and C 232-0 10°23 Tees 
Measures of A and B by Struve. Dembowski gives, P= 
280°°6 ; D=2’-80 (1866:6), from which it is safe to infer there 
18 no substantial change in the relation of these stars, and this 
View 1s supported by the measures of Otto Struve, Midler, 
Dawes, and others. The small star is not a difficult object 
with the 184 in., and can perhaps be measured with a smaller 
aperture. 
No, 451=15 Lacertae. 
R.. A.==22> 46":37° 
Decl.=+-42° 40’ 
This star was seen with a minute attendant, roughly esti- 
mated from memory as about 20” distant. The angle was not 
noted, and no opportunity occurred to re-examine and measure 
Subsequently. 
No. 452=L 44915 
R. A.==22" 51™ 378 | 
Decl.=+-42° 22’ 
A fine pats observed about the same time as the proses 
oe like that only estimated for the purpose of certain identifi- 
lon : 
P=270°+ D=6"+: ; 
‘: The large star is 64 or 7 magnitude, and the companion 
elow 12 of Struve’s scale. oe 
Chicago, May 5, 1877. | | , 
