ABSTRACTS FOR THE MAGNETIC DECLINATION. 
TABLE VI.—The Extreme Readings of the Declinometer for each of the Term-Days, 
North End of Magnet Farthest 
E. Ww. 
Bed ae Declination. a oe Declination. 
1841. 
July 
August 
September 
October 
November 
December 
1842. 
January 19 10 36 25 23-17 20 4 18 25 38-89 15-72 
February 25 10 O 25 22-42 26 2 24 25 37-02 14-60 
March 24 8 36 25 9-38 23 13 12 25 40-38 31-00 
April 20 15 24 25 22-38 20 16 12 25 46-82 24-44 
May 27:21 0 25 25-02 28 218 25 36-23 11-21 
June 23 8 6 25 16-95 23° 10 25 37-23 20-28 
July 20 10 O 25 16-77 21 1 42 25 32-87 16-10 
August 26 12 42 25 17-47 26 11 42 25 33-13 16-66 
September 22 7 30 25 11-10 PI ia te) 25 41-73 30-63 
October 19 10 48 25 16-26 19 13 18 25 38-23 21-97 
November 25 10 O 25 26-22 26 1 42 25 31-70 5-48 
December 20 10 O 25 22-40 21° 0 36 25 30-93 8-53 
The range of the six Term-days of 1841 is 51-4; the least Westerly Declination occurring in October, being 
$3”3 below the mean of the month; the greatest in August, being 12’4 above the-mean of the month. 
j The range of the twelve terms in 1842 is 374; the least Declination occurring in March, being 20°1 below 
the mean of the month; the greatest in April, being 13’-4 above the mean of the month. 
TABLE VII.—The Extreme Readings of the Declinometer during Extra Observations for each Month in which 
' Extra Observations were made. 
— 
North End of Magnet Farthest 
Month. = vid | Range 
es a | 
Gorengen.. Declination. eeingen. Declination. |) 
1841. aoh ms. eres ahem. a. os ’ 
August 20 22 40 O 25 35-28 20 23 20 O 25 38-30 3-02 
September 25 5 35 18 25 21-07 25 6 20 18 27 1-56 100-49 
B 1842. 
i May 24 8 0 0 25 30-45 165 0 0 25 49-71 || 19-26 
July 1 20 42 0 25 6-55 21148 O 25 50-28 43-73 
August 65 30 0 25 21-65 19 548 0 25 34-88 13-23 
September 2 8 24 0 24 54-28 21 2 0 0 25 37-30 43-02 
October li) 240 25 5-08 18 3 4 0 25 32-87 27-79 
November 3 8 0 0 25 17-57 21 20 48 O 25 40-98 23-41 
December 9 5 54 0 25 9-58 9 824 0 25 36-22 | 26-64 
The range of all the disturbances observed in 1842 is 56. 
The least Westerly Declination occurs in September, being 335 below the mean of the month; the greatest 
in July, being 217 above the mean of the month. 
The range of Declination from ail the observations of 1841 is 2° 47. The least Westerly Declination oc- 
& curring in the October term 1841, being 33’:3 below the mean of the month; the greatest during the disturbance 
September 25. 1841, being 1° 293 above the mean of the month. 
; The range of all the observations in 1842 is 58’. The least Westerly Declination occurring during the dis- 
turbance September 2. 1842, being 335 below the mean of the month; the greatest in the Daily Observation, 
4 April 14° 205 1842, being 18-9 above the mean of the month. 
