23^ SCIENTIFIC NEWS. 



Scie7itific Voyage. 

 Scientific ex- AN expedition has been fitted out from Kamtschatka to 



pedition from tne Curile and Aleutian islands, and the North West coast 

 of America, the objects of which are entirely scientific. 

 Mr. Redovvski, who accompanied the embassy from the 

 court of Russia to Pekin, as botanist, is placed at the head 

 of it. An astronomer will sail with him for the purpose of 

 making observations, but his name is not mentioned, or that 

 of any other man of science. The voyage is to be of three 

 years duration. 



discharge can- 

 non. 



Rockets discharged by Electricity. 

 Application of THE 14th of February, at two o'clock in the afternoon, 

 ^ct r 'cuy to fl£ i3 oac ] ie ma d e a n experiment in the Jardin des Plantes 

 at Paris, to try the effect of electricity applied to gun bat- 

 teries. Instead of guns he had fixed about one hundred 

 rockets on long sticks, disposed in the garden. The rockets 

 were all connected by an iron wire, and the same spark 

 caused them all to explode at the very same instant. The 

 concourse of people was very great, the weather being re- 

 markably fine. This new invention is not intended to in- 

 crease the destructive powers of those formidable weapons; 

 but it is expected to afford the means of using them withont 

 exposing gunners to the fire of the enemy. 



Imperfections of Alegar. 

 Premium for VINEGAR made of beer, properly called alegar, con- 

 the improve- stantly retains a mucous matter, which prevents it from 

 a egar. ^^^ The soc i ety f anl ateurs of sciences and arts at 

 Lisle, wish to have this defect removed; and propose a 

 medal for the best mode of improving alegar in those qua- 

 lities which may render it equal, or nearly so, to the best 

 wine vinegar. It deserves notice, that this liquor has some 

 properties, Avhich, could they be separated from others not 

 so valuable, would render it worthy of more attention than 

 it has hitherto received. 



