368 Mr. South’s re-examination of the apparent distances 
No. XXVI. R. A. 1 7 h 56 m ; Decl. 2° 33' N. 
70 p Ophiuchi ; II. 4 ; H. and S. 258 ; 
- continued. 
The mean of both series, allowing each a weight propor- 
tioned to the number of measures, gives for the 
Epoch 1825.56 ; Position 58° 3 ' 5/(105 measures.) 
Distance 4". 765 (71 Obs.) 
If now we collect all the observations made in the years 
1821, 1822, 1823, and 1825, we find as follows : 
1821.51 ; 66 ° 50 r sf ; (Mean of Herschel’s, South’s, and 
Struve’s Obs. Phil. Trans. 1824. iii. p. 290. 
1822.49; 65 0 7 ' sf; H. and S. 1822. 
1823.32 ; 63 25 sf ; H. and S. 1823. 
1825.54; 58 3 sf; S. ut supra. 
The intervals are 0.98, 0.83, and 2.22 years, and the 
Angles described respectively in them — i°.7i7, — i°.70o, 
and — 367 , whence the angular velocities come out re- 
spectively — T.751, — 2°.o5o, and — 2°.4i8, all of them 
greatly below what appears to have been the velocity up to 
1820, and not differing more than might fairly be expected, 
considering the difficulty presented by the unequal size of 
the stars. The last determination, considering the great 
number of measures it rests upon, may be regarded as en- 
titled to great confidence, in spite of the discordant results of 
April 3 and May 3, 1825, which, however, whether rejected 
or retained, make little difference in the final mean. It was 
on these ( unluckily), that the note at the end of the paper of 
1824 was founded. 
The fact of a great diminution of angular velocity then in 
