26 SOME NEW DOUBLE STARS AND SOUTHERN BINARIES. 
both 8, the distance between them 3”, and the angle of position 
126° 1’. Two years later he examined the same star, and found 
the magnitudes the same, but the distance was then 6", and the 
angle of position 128° 7’. Here seemed unmistakable evidence of 
motion, and when I turned the telescope to examine the in 
1870, by accidentally misplacing the telescope, nly the diameter 
of the field of view, I found another star of the same general — 
character, and vik seemed to be Herschel’s star, but the angle 
Boe to be 192", and the distance 23". When exa os th 
ats an elliptical orbit that I felt sure here w was a new bin The 
distance seems large, but it has been proved that there wa be a 
distance of 22” between two stars in an orbital system, and here 
was but one second more. The slight difference in right ascension 
and declination did not attract much attention, because it is not 
uncommon to such errors in the Cape catalogue. Sule 
observation, however, revealed no change in my star, 
searching more carefully I found Herschel’s star, of which ie 
distance proves to be 5”2, and the position peale 125° 38’, nearly 
mean between Herschel’s distances, and about the same 
proving that no appreciable change has taken place in it since ba 
"Of the new double stars which I perpoes to put before you to 
night, 22 are in the constellation Crux, as shown in this map, 
which you will see has in some S ahirced cau the limits of 
the constellation. For the purpose of showing you their relative — 
positions with regard to other stars in that constellation, Ihave — 
had this diagram prepared, which shows, first, the positions of te 
catalogued stars; second, Sir John Herschel’s 25 doubles ; and, | 
thirdly, my own with a black circle round each. The first of thet 
in R. A. 1th, 40m., dec. 57° 20’, is a very pretty double, of vie 
the distance is 5”, both of the 9th magnitude, and yellow: at ll 
general list of 252 new ones, com having some poll 
would make y useful or interesting to to the o “ 
fs gs elgg) 45m., dec. 58° 38’, when first paar in 1874 
Smeg difficult double star, of which the distance was less 
measuring such a y be best conveyed to the non-00%” 
by saying that ina large. telescope (7 inches) the two image 
