Extreme Positions. 



259 



TABLE XXXIII. — Greatest and Least Diurnal Ranges of the Magnetic Declination, Horizontal and 

 Vertical Components of Magnetic Force, for each Month in 1843, as obtained from Tables VI.. 

 XIII., and XX. 



Month. 



Declination . 



Horizontal Component. 



Vertical Component. 



Day. 



Greatest 

 Range. 



Day. 



Least 

 Range. 



Day. 



Greatest 

 Range. 



Day. 



Least 

 Range. 



Day. 



Greatest 

 Range. 



Day. 



Least 

 Range. 



January 



February 



March 



April 



May 



June 



July 



August 



September 



October 



November 



December 



28 

 6 



29 

 6 

 6 



30 



24 

 4 



18 



26 

 3 



11 



f 



11-85 

 49-03 

 25-78 

 33-38 

 25-50 

 25-60 

 32-85 

 19-10 

 21-83 

 25-14 

 12-74 

 17-39 



5 



1 



1 



22 



13 



19 



6 



5 



30 



10 



27 



16 



1 



3-40 

 3-19 

 3-60 

 5-30 

 6-36 

 7-00 

 7-63 

 7-16 

 7-07 

 3-55 

 2-68 

 2-97 



9 



24 



7 



5 



6 



12 



25 



4 



9 



16 



3 



11 



0-0 



0227 

 0210 

 0346 

 1265 

 0939 

 0417 

 1627 

 0696 

 0405 

 0567 

 0237 

 0305 



7 

 2 

 1 

 22 

 13 

 22 

 22 

 16 

 15 

 21 

 22 

 19 



0-0 

 0029 

 0045 

 0046 

 0144 

 0170 

 0187 

 0173 

 0196 

 0132 

 0130 

 0042 

 0028 



28 

 24 



7 



5 



6 



13 



25 



4 



22 



5 



3 



8 



0-00 



1331 

 1483 

 3300 

 3738 

 2713 

 0691 

 2258 

 1536 

 0896 

 1011 

 0681 

 1177 



20 

 2 

 28 

 22 

 12 

 9 

 12 

 16 

 27 

 28 

 11 

 16 



0059 

 0099 

 0103 

 0145 

 0145 

 0139 

 0129 

 0142 

 0226 

 0130 

 0105 

 0083 



Inclinometer. 

 TABLE XXXIV. — Monthly Means of the Observations of the Inclinometer for the Magnetic Dip. 



Month. 



No. of Observations. 



Magnetic Dip, 



A.M. 



P.M. 



23'' Gbttingen. 



4'" Gottingen. 



Mean of all. 



1843. 

 January 

 February 

 March 

 April 

 May 

 June 

 July 

 August 

 September 

 October 

 November 

 December 



5 

 4 

 2 

 4 

 2 

 5 

 3 

 4 

 1 

 2 

 2 

 4 



4 

 3 

 5 

 3 

 4 

 5 

 4 

 5 

 2 

 2 

 4 

 5 



O 1 



71 20-94 

 71 23-17 

 71 21-46 

 71 21-76 

 71 22-40 

 71 23-67 

 71 25-64 

 71 23-67 

 71 25-94 

 71 30-40 

 71 25-58 

 71 25-32 



O f 



71 21-69 

 71 21-90 

 71 22-29 

 71 22-85 

 71 22-57 

 71 23-65 

 71 29-50 

 71 19-53 

 71 21-43 

 71 27-06 

 71 26-20 

 71 26-27 



O / 



71 21-27 

 71 22-62 

 71 22-04 

 71 22-23 

 71 22-52 

 71 23-66 

 71 27-85 

 71 21-37 

 71 22-94 

 71 28-73 

 71 25-99 

 71 25-85 



The Year 



38 



46 



71 23-72 



71 23-69 



71 23-70 



The inclinometer worked very imperfectly after the month of June, see Introduction, § 8. No correction 

 has been applied for the error of axle, as in the previous year, when a correction of — 12' was made. 



o / 



The mean magnetic dip for the first six months of 1842, uncorrected, was 71 24*39 



1843, is 71 22-39 



the year 1842, was 71 23-95 



1843, is 71 23-70 



