| 
ae 
IN THE CONSTELLATION ARA. ae 
seven minutes. Assuming now the observed position of E with 
reference to B as the approximate difference of the stars’ mean 
places, we get for the mean place of E for 1862-0 thus :-— 
ham. 8: eee 
Mean R.A. of B1862°0 = 16 31 58:0 Mean N.P.D. of B 1862-0135 6 88 
Diff. R.A. of stars = + 44 489 Diff. N.P.D. of stars = + 38 48 
Mean R.A. of £18620 = 17 16 469 Mean N -P.D. of EB 1862-0135 45 26 
which agrees pretty well with the position of Lacaille 7267, as 
brought up from that catalogue by means of precession alone as 
‘Si 
hem: 8 pe at on! 
‘ HAs = 17 16375 N.P.D. = 155: 45) 87. 
have thus cumulative evidence of the aceuracy of the 
B 
~~ 
fa) 
4 
os 
Rm 
rs) 
es 
—e 
B 
au 
3 
° 
e 
1862 so as to be hardly visible in the telescope. Adopting the 
lace of V for 1862°0 as before derived in this paper, 
and + 4415s. and + 2°69” as its annual igeeag in R.A. an 
N.P.D., I obtained the mean place for 1878°0 as follows,—R.A. 
= 17h. 30m. 13°15s., N.P.D. — 135° 24’ 168”. A careful ex- 
amination of this position on the evenings of the 13th, 14th, and 
: _ 17th instant showed that the only star in or very near it’ was a 
* 
