New Comet. 373 
known to our chemists several of these immediate prin-— 
ciples. 
Messrs. Vauquelin and Robiquet have found in the juice 
of asparagus a crystalline substance soluble in water, which 
nevertheless is neither an acid nor a neutral salt ; and it is 
not affected by the ordinary re-agents *. They purpose fol- 
lowing up the examination of its nature. 
[Vo be continued.} 
LVI. Intelligence and Miscéllaneous Articles., 
NEW COMET. 
Letter of Dr. Olbers to the Editor of the Hamlurgh 
Correspondent. 
Bremen, Dec. 23, 1806. 
Miss comet discovered by M. Pons at Marseilles oa the 
10th of November has not been visible to us these few days 
Past, on account of its too great increase of southern de- 
clination. According to observations made here and at Li- 
lienthal, M. Bessel, superintendant of the observatory of the 
celebrated senator of justice Schroter, at Lilienthal, has cal- 
culated the path of this comet. From the calculation it fol- 
lows that the new comet, after appearing in superior bril- 
lianey in the southern parts of the globe, and after passing 
very close to the south pole of the ecliptic on the 3Ist of 
December, will be again visible towards the middle of Ja- 
nuary, above the horizon of the observatories in the sonth 
of Europe, and about the 20th of the same month will be 
also visible in this neighbourhood. It will then be seen in 
the milky way, in the sign of the Whale, included by the 
new astronomers in the sign of the Electrical Machine. With 
us the comet will rise but a very little above the clearest part 
of the south and south-west horizons, and on that account 
we can only observe it if we are favoured with warmer wea- 
ther; but in the south of Germany, France, Italy, &c. it 
may be very distinctly observed, and followed with the te- 
fescupe, until very near the end of February. 
* See the present volume, pages 33, 115, 239. 
Aas Tn 
