(161 ) 
AitT. , XXVIII. — Magnetical Observatiom made at 
Heath, near Stanmore. By Colonel Beaufoy, F. It. S. 
Communicated by tlie Author. ■, 
Magnetical Obsehvatxons, 1822.-— V^iation West. 
Month. 
Morning Observ. 
Noon Observat. 
Evening Observ. 
Hour. 
Variation. | 
Hour. 
V ariation. 
Hour. 
Variation. 
o 4 if 
h / 
off/ 
I 
March 1. 
8 33 
24 32 47 
1 30 
24 37 46 
2. 
8 30 
24 26 42 
1 30 
24 40 40 
1 
3. 
8 30 
24 31 30 
1 
4. 
8 28 
24 30 28 
1 38 
24 37 13 
1 
.5. 
8 30 
24 28 18 
1 34 
24 36 51 
1 
6. 
8 34 
24 27 17 
1 30 
24 37 08 
1 
7. 
8 28 
24 28 04 
1 30 
24 38 05 
1 
8. 
8 32 
24 27 06 
1 30 
24 36 55 
! 
9. 
8 36 
24 27 24 
- 
10. 
8 32 
24 26 43 
1 30 
24 35 43 
11. 
8 35 
24 27 24 
1 40 
24 34 20 
12. 
8 37 
24 27 37 
1 25 
24 36 17 
13. 
8 40 
24 31 30 
1 26 
24 38 11 
14. 
8 35 
24 27 45 
1 25 
24 36 30 
IS. 
8 35 
24 30 19 
1 25 
24 36 22 
16. 
8 25 
24 31 50 
1 16 
24 36 47 
17. 
8 32 
24 27 36 
1 25 
24 35 24 
18. 
8 30 
24 26 40 
1 25 
24 36 58 
19. 
8 35 
24 27 54 
1 25 
24 35 07 
e^'os 
24° 32 12 
20. 
8 30 
24 26 29 
1 27 
24 36 02 
6 15 
24 31 30 
21. 
8 35 
24 28 26 
1 35 
24 37 55 
6 25 
24 27 42 
22. 
8 30 
24 24 35 
1 25 
24 35 09 
6 18 
24 25 38 
23. 
8 30 
24 25 53 
1 30 
24 36 49 
6 20 
24 28 48 
24. 
8 30 
24 26 26 
1 25 
24 35 11 
6 20 
24 28 39 
25. 
8 35 
24 25 23 
6 25 
24 27 29 
26. 
8 30 
24 24 45 
27. 
8 30 
24 25 25 
1 47 
24 38 15 
6 25 
24 30 20 
28. 
8 32 
24 25 55 
1 34 
24 35 26 
6 13 
24 28 58 
29. 
8 28 
24 26 30 
1 28 
24 36 13 
6 20 
24 28 14 
30. 
8 40 
24 26 15 
1 45 
24, 35 46 
6 27 
24 27 54 
31. 
8 35 
24 25 46 
1 30 
24 35 26 
6 30 
24 27 33 
Mean for I 
Month, j 
8 32 
24 27 38 
1 29 
24 36 36 
i 6 20 
24 28 45 
By comparing the mean of these observations with those of March. 
1819, the period of the greatest Western Variation, the Morning 
decrease is 5'.40", the Noon 5'.06'^ and the Evening 6'.32"; 
Mean of the three 5'. 40", which is an annual diminution of 
VOL. VII. NO. 13. JULY 1822. 
L 
