316 Colonel Beanfoy's Astronomical, Magnetical, [Oct. 



Article XI. 



Astronomical, Magnetical, and Meteorological Observations. 

 By Col. Beaufoy, F.R.S. 



Bushey Heath, near Stanmore. 



Latitude 51° ST' 42" North. Longitude West in time 1' 20-7". 



Astronomical Observations. 



Aug. 8. Emersion of Jupiter's first S 9 b 34' 12" Mean Time at Bushey. 



satellite i 9 35 33 Mean Time at Greenwich. 



20. Emersion of Jupiter's third 5 8 54 53 Mean Time at Bushey. 



safellite ( 8 56 14 Mean Time at Greenwich. 



31. Emersion of Jupiter's first < 9 49 23 Mean Time at Bushey. 



satellite } 9 50 44 Mean Time at Greenwich. 



Magnetical Observations, 1818. — Variation West. 



In taking the monthly mean of the observations, those on the 

 morning of the 29th and noon of the 21st are rejected, being so 

 much in excess, for which there was no apparent cause. 



