IN THE CONSTELLATION ARA. 199 
I may state that the value adopted for the semi-diameter of the 
f view was 26'19". It was remarked this evéning that a 
small round nebula appeared north of the star V, both of which 
objects.could be embraced in the same field of view. The fol- 
lowing evening, the 5th, was also very clear, and I compared B 
and another star E of the 6 or 6} magnitude with the bright star 
V across the field of the telescope, with the following results :-— 
52) MU 
Ist comp.... B—V,in R.A. = — 57 536 B—V in N.P.D. = —15 
‘Qnd ,, Gy oe OF EO OR: So eae 
Ist HV. ,, }° ==-—12 1651 BV, ; = + 24 
Tu the first comparison V crossed very near the centre of the 
field, and in the second B passed very near it, but as both B and 
E crossed at a good distance from the centre in the first com- 
parison their relative position was pretty well determindd as 
follows :— 
m. 8. * 
E—B, in R.A. = + 4448985 E-—B, in N.P.D. = + 38 48 
star of tw t three minutes of arc apart, companion 
being about the 7} magnitude.” On the evening of the 6th, 
which was also beautifully clear, I observed a transit of Ban 
V, which latter according to a remark of this date was “a degree 
or two south of Theta Scorpii,” and was still regarded by me as 
Sigma Are. This comparison was made with the ring-micrometer, 
and as both objects crossed it very far from its centre the result 
for north polar distance was satisfactory. The following is the 
result :— ies 
1 8 
B—Y, in R.A. = — 57.711 B—V,in N.P.D. = — 16 10 
conspicuous to the naked eye.” give the sextant observations 
as recorded, with the exception that the clock times are corrected 
indsor mean time :-— 
. ° é a” 
h. m. i 
At7 6} Index error... ... — et pe 
» Read ist from Theta Scorpii ... _ 
Bee caverta » ‘Cheta Scorpii . 230 0 (better). 
lg alee ns 61 49 50 
pipes baccsieeciee’ 88 86 40 . 
~ » Epsilon Sagittari 14 2 40 
; x CFPUr 4... — 0 7T 0 
