distances and positions of 380 double and triple stars , &c, isi 
(18 Bode Hydrae) continued. 
rubiiiuu. 
' - 
63.50 
67.30 
6 3-5S 
68.io 
68.55^ 
Mean = 66.28 
March 9, 1823. 
Five-feet Equatorial. 
n f 
Mr. Troughton. 
Position 66°.28' nf. Mr. Troughton. 
Position 66°. 52' nf. (S.) 
Position. 
Mean — 66.52 
Position. 
March 15, 1823. 
Five-feet Equatorial. 
nf 
Mr. Richardson. 
Angle — 64°. 1 3' nf. Mr. Richardson. 
Mean zz 64.13 
Mean result. 
Position 65° 5 f nf, 1822.56. Distance 10". 844. 1821.% 
The measures of this star have furnished a curious instance 
of a constant difference between the observations of two ob- 
servers ; the one always observing angles above the mean, 
the other below it ; and that not one night only, but after 
long intervals, without communication, &c. Occasionally 
each observer read off the other’s measure, and each declared 
his eye offended by the situation of the micrometer wire as 
left by the other. The differences being found irreconcile- 
able, other practised observers were called in to decide the 
point, whose measures, as will be seen, had no such effect. 
However the mean angle 65° 57' here set down, being the 
result of 47 single measures, by four different observers, and 
on five nights, embracing an interval of two years, cannot 
well be erroneous to any extent. 
R 
MDCCCXXIV. 
