310 SCIENTIFIC NEWS. 



Nebula in Mr. Messier has given a beautiful delineation of the ne*r 



Orion. b u ] a j n Orion, to which he has added that of Legentil,and 



another much more difficult to perceive, which he himself 

 discovered in 1773. 



Violent storms. He has likewise collected all the particulars of the thun- 

 der storm, that burst over Paris on the 21st of October, 

 1807 ; and the not less extraordinary gale of wind, that oc- 

 curred the next day. Jn the observations he has registered 

 •for fifty }ears he f-inds nothing similar to it. The church 

 of Moutivillers was struck by lightning during a storm 

 equally violent, that took place on the 3d of November 

 following. 



Cornet. On the 21st of October Mr. Pons discovered the comet 



at Marseilles. It was then austral, near the horizon, and 

 set soon after the sun. It was seen a few days after by dif- 

 ferent astronomers in France and Germany, and at Madrid. 

 Mr. Burekhardt has calculated its orbit. 



Other comets. Mr. Burekhardt has found in the archives of the Impe- 

 rial Observatory some unpublished observations^ of the 

 comet of 1701, seen at Pau by Father Pallu. He suspects 

 it is the same as was seen at sea in February following. 

 Having found an important observation of the comet of 

 1672, he has calculated its elements afresh, and finds its 

 perihelion distance greater than was before assigned ; whence 

 he infers, that it could not be the same with that of J 805, 

 which some had supposed. 



Tables of Ju- Mr. Bouvard has accomplished a more important and 



turn and Sa " more g enera % u^ul task > corrections of the tables of 

 Jupiter and Saturn ; and Mr. Delambre has availed himself 

 of these in the ecliptic tables of Jupiter's satellites, which hq 

 has entirely reconstructed, and will shortly publish. 



Adhesion of The only paper in physico-mathematics mentioned is 

 Count Rumford's, printed in our Journal, Vol. XV, p. 52, 

 from his communication. 



Measure on Beside the Memoirs of the Institute, the second volume 



the meridian. f the "Base of the Decimal System of Measures" has 

 been published. It contains the remainder of the obser- 

 vations of all kinds, and the calculation of the triangles 

 from Dunkirk to Barcelona; the heights of the signals 

 , above the surface of the two seas; the azimuths aud the 



latitude* 



