436 Scientific Intelligence. 
ington with the igi baat of the last two, which were made at Cam- 
bridge, Eng. 
Diff. A. R. Diff. Dec. Diff. A.R | Diff. Dec. 
Jan. 13, | about 4-08 | 1’ or 2 Feb. 13, 8-68 4' 38" 
14, | 4:0 *)) TTS" moO" . e. & 
18, 46° 'T a7 18, | 99 aha 98 
19, 43 | 1 48 21 | -EL7 5 -52 
22, 53.) 1-57 224 | 191 6 4 
23, ig} Saaee e4 26, | 14:8 6 48 
24, se ae ae March 3, | 19-4 1°35 
26, §5 1.2 19 ee 3 | 8 Il 
8, SG- | 2 27 5, {22-5 8% 
Feb. 4, 62 | 3 10 8, | 25-1 8 28 
» 65 713: Qi 10, | 26-6 8 52 
9 Gh. P&B 14, + 32:7 9 10 
11 TR sek 21,.| 42:9 8 44 
32, 8:0 |4 29 _ 2b.-| 463 8 23 
27, | 47-4 7 54 
The following observations show the changes of ek niga which the 
two bodies experienced. 
Jan. 18th, the companion was first seen at Washington, but too faint 
for accurate measurement. It was estimated to have one eighth the 
magnitude and one fourth the intensity of Biela, or the main body. 
From this time, the companion increased rapidly both in magnitude 
and brilliancy. On the 12th of February the companion appeared the 
brightest, and on the 16th, the companion was estimated to be equal to 
Biela as to magnitude, but to have one third more intensity of light. 
On the 18th of February, Biela-exceeded his companion at least two- 
fold both in magnitude and intensity of light. From this time the com- 
panion rapidly declined ; and on the 3d of March it was estimated at 
one sixth of Biela. March 10th, the companion was estimated at one 
twentieth the brightness of Biela, and at Berlin it was pronounced too 
faint to be observed, although Biela was followed till April 24th. The 
companion was last seen at Washington, March 2ist, and at neers 
Ene.; March 27th, but “excessively faint.” 
The following notices of the physical appearances of these two 
bodies, as observed at Washington, will throw some light upon the na 
ture of their connection with each other. 
Jan. 14th, were noticed glimpses of a tail to each body ; Biela’s tit 
extending N. E., and his companion’s nearly parallel with it. 
Jan. 18. ‘Tail of Biela only a few minutes of arc long, extend- 
| ing towards N. E., lancet like. Tail of companion not so long, but 
“Rearly parallel. Nuclei decidedly condensed towards the centre, but 
oc ta,” 3 
not resolvable in into points of light except perhaps Biela’s by glimpses- 
