376 Hydroxanthic Acid. 
made by Schenk, an eminent artist at Bern, and a pupil of 
Reichembach, worthy of that excellent master. This in- 
strument is considered as a Chef d’ceuvre by several astron- 
oters who saw it in 1821, among whom were Nicollet of 
Paris, and J. F. W. Hersthel of London. 5th. A repeat- 
ing theodoiite, by Reichembach, a foot in diameter, an ex- 
cellent and beautiful instrument, perfected by Schenk, who 
has given a double repetition by the addition of an entire 
vertical circle. 6th. A 31 feet achromatic telescope, by 
Dolland, with four powers, viz. 38.67, 100, and 150. 7th. 
An equatorial instrument of English origin, but reconstruct- 
ed by Schenk. - Lastly, Several smaller instruments intro- 
duced rather for the instruction and use of amateurs,—an 
object not foreign to such an establishment. Such are two 
repeating theodolites by Schenk, of 7 and 8 inches, a neat 
sextant by Carey, a tellurium, a beautiful armillary sphere, 
as well as meteorological instruments, among which is a 
very large and fine syphon barometer. 
Bib. Univ. Sept. 1822. 
The readers of this journal may ask each other with so- 
licitude, when shall we see ae an establishment as this 
in | any part of the United Stat 
(says the ote Piofessor Pictet) the 
meeting of the Helvetic Society should have offered us no 
other object of interest, than a visit to this observatory, We 
ould conceive ourselves amply paid for a journey of sixty 
leagues. We regard thétime passed in this sanctuary of 
astronomy among the most agreeable and profitable mor 
ments that we have ever enjoyed. We feel ourselves pa 
ticularly happy in belonging to a couutry favored by heav- 
bod he w ot are manifest a noble emulation, 17 
encouraging establishments, which have 
for thety jet the progress of the arts and sciences. and 
of useful and solid instruction. We have found in the. 
government of Bern the principles and disposition with 
which that of Geneva is animated.” 
6. “Hydroxanthic Acid.—Professor W. C. Zeise, of the 
“hepa dee has discovered that ed of 
power of neutralizing potash or soda, 
solved i m alcohol, although i it will not change turnsol, not 
