76 Col. Beaufoy's Astronomical, Magnetical, [Jan. 



Article X. 



Astronomical, Magnetical, and Meteorological Observations. 

 By Col. Beaufoy, F.R.S. 



JBushey Heath, near Stanmore. 

 Latitude 51° 37' 42" North. Longitude "West in time 1' 20-7". 



Astronomical Observations. 



Nov. 6. Emersion of Jupiter's first J 6i' 20' 27" Mean Time at Busliey. 



satellite \ 6 21 48 Mean Time at Greenwich^ 



Magnetical Obsei-vations, 1819. — Variation West. 



Month. 



Nov. 1 



2 



3 



4 



5 



6 



1 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



24 

 25 



26 

 27 

 28 

 29 

 30 



Morning Observ. 

 Hour. Variation. 



IVlean for 



the 



Month. 



8h 35' 



8 25 



8 30 



8 35 



8 30 



8 30 



8 30 



8 30 



8 35 



8 35 



8 30 



8 35 



8 35 



8 35 



8 35 



8 45 



8 35 



8 35 



8 35 



8 35 



8 30 



35 

 35 

 40 

 40 

 8 40 

 8 40 

 8 45 



8 35 



8 35 



24° 32' 



24 32 



24 31 



24 30 



24 32 



24 32 



24 30 



24 33 



24 31 



24 33 



24 32 



24 31 



24 33 



24 44 



24 34 



24 31 



24 33 



24 32 



24 31 



24 31 



24 31 



24 31 



24 31 



24 32 



24 38 



24 33 



24 33 



S4 32 



07" 



47 



48 



58 



25 



37 



45 



CO 



38 



30 



46 



45 



47 



50 



45 



42 



00 



11 



39 



37 



32 



33 



54 



39 



48 



55 



34 



41 



Noon Observ. 

 Hour. Variation. 



l'- 35' 



24 34 09 



24 33 42 



35 



20 

 25 

 20 

 25 

 25 

 25 

 15 

 15 

 15 

 15 

 20 

 20 

 20 

 20 

 20 



24° 40' 14" 



20 

 20 

 20 

 20 

 20 

 20 

 20 



I 15 



1 20 



24 38 35 



24 41 00 



24 40 13 



24 42 05 



24 37 55 



24 39 26 



24 38 40 



24 38 31 



24 39 27 



24 40 26 



24 40 32 



24 39 51 



24 38 43 



24 38 26 



24 38 34 



24 38 40 



Evening Observ. 

 Hour. Variation. 





24 38 16 



24 36 09 



24 38 33 



24 35 36 



24 38 25 



24 39 02 



24 37 19 



24 36 32 



24 35 31 



1 21 



24 38 43 



o 



T3 



C 

 ft 



c 



In taking the mean of the morning observations, that of the 

 14th is rejected, being so much in excess, for which there^ 

 was no apparent cause. On the noon of the 21st, the needle 

 vibrated at intervals 16, and in the evening it rained and snowed. 



