156 Colonel Beaufoy’s Astronomical, Magnetical, [Frx, 
ArTicLeE XIII. 
Astronomical, Magnetical, and Meteorological Observattons. 
By Col. Beaufoy, F.R.S. 
Bushey Heath, near Stanmore. 
Latitude 51° 3742” North. Longitude West in time 1/ 20°7”, 
if 
Astronomical Observations. 
Dec. 3. Emersion of Jupiter’s first § 5° 19’ 20’ Mean Time at Bushey. 
SALOME’. cru'eisicto.c ont= eeevee @ 5 20 41 Mean Time at Greenwich, 
Magnetical Observations, 1818. — Variation West. 
Morning Observy. | Noon Observ, Evening Observ. 
Month. 
Hour. Variation. | Hour. Variation, Hour. | Variation. 
—. —EEE eS LY 
Dec. 1] 8h 25’| 24° 37’ 27"! 1» 20'| 240 48! 30" ng 
2| 8 25/24 38 46/1 20/24 41 02 5 
ff |e ise Ue leg ie a 
4| 8 25/24 35 00] 1 20/24 41 10 5 
5| 8 30/24 38 55] 1 15! 24 40 08 = 
6| 8 35| 24 36 00| 1 20/24 41 17 a 
7| S$ 30| 24 36 24] 1 35] 24 39 93 g 
8] 8 30] 24 37 0S} 1 15|24 39 54 < 
9| 8 30|24 37 47] 1 10] 24 41. 47 FS 
10} 8 35|24 35 58] 1 15/24 41 11 g 
11} 8 35|24 35 45| 1 15] 24 38 9292 "a 
12} 8 35/24 35 17] 1°10] 24 41 05 dn 
13} 8 35/24 37 26] 1 15] 24 41 35 & 
14] 8 35/24 34 17] 1 15/24 4t is} § 
15} 8 40/24 35 48] 1 20|24 40 24 5 
16| 8 40/24 36 51] 1 15]24 44 09 of 
17} 8 40] 24 37 48] 1 15] 24 43 37 = 
TR Be Sd (Od 480" GS Se 
19] 8 30/24 38 51/ 1 25] 24 41 08 z 
20/ 8 35/24 86 39] 4 20] 24 40 50 e 
21{ S 35|24 34 41{ 1 25] 24 38 51 ° 
227 8 35|24 88 37] 1 20/24 44 04 2 
25 RESIS Tag PACS tS es al & 
24); 8 35| 24 38 32/ 1 30/24 43 49 S 
25) 8 40) 24 47 37] 1 20] 24 41 12 = 
26| 8 40/24 38 17] 1 15)24 40 17 2 
971 8 45|24 37 19] 1 30/24 39 42 = 
281 8 40|24 40 20] 1 15) 24 39 56 = 
29} 8 35]24 36 49} 1 20|24 40 48 bo 
30| 8 40] 24 34 50] 1 20] 24 40 53 = 
31] 8 45/24 35 50] 1 15/24 40 52 ro) 
Mean for is 35/24 87 011] 1 19/94 41 20 
Month. 
In taking the monthly mean of the observations, that on the 
morning of the 25th is rejected, being so much in excess, for 
which there was no apparent cause. 
