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. 
Declination. Horizontal Component. Vertical Component. 
Greatest Least Greatest 
Range. Y- | Range. Y- | Range. 
0-0 00 0-00 
January : “ 0227 0029 1331 
February . : 0210 0045 1483 
March . ‘ 0346 0046 3300 
April : ; 1265 0144 3738 
May : : 0939 0170 2713 
June : Fi 0417 0187 0691 
July ' : 1627 0173 2258 
August - . 0696 0196 1536 
September : : 0405 0132 0896 
October . 0567 0130 1011 
November . . 0237 0681 
December “ 5 0305 | 1177 
INCLINOMETER. 
TABLE XXXIV.—Monthly Means of the Observations of the Inclinometer for the Magnetic Dip. 
No. of Observations. Magnetic Dip. 
A.M. P.M. 235 Gottingen. 44 Gottingen. ~ Mean of all. 
1843. °o , o ¢ ° / 
January 5 4 71 20.94 71 21-69 71 (21-27 
February 4 3 71 23-17 71 21-90 71 22.62 
March 2 5 71 21-46 71 22.29 71 22.04 
April - 4 3 71 21-76 71 22.85 71 22.23 
May 2 4 71 22-40 71 22-57 71 22-52 
June 5 5 71 23-67 71 23-65 71 23-66 
July 3 4 “71 «(25-64 71 29-50 71 = 27-85 
August 4 5 71 23-67 71 19-53 71 21-37 
September 1 2 71 25.94 71 21.43 71 22.94 
October 2 2 71 30-40 71 27-06 71 28-73 
November 2 4 71 25-58 71 26-20 71 25-99 
December 4 5 71 25-32 71 26-27 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. 
The mean magnetic dip for the first six months of 1842, uncorrected, was 71 24-39 
se ene cee cee egesre cee ces cncsecececescetceeeeecs ssecereee 1843, acseeseseeee is 71 29-39 
Sy tk de SEAS aA eR the year 1842, seseeee was 71 23°95 
Ben CE CECS PORECOOCICETI COO Ee Con Deon 1848, -.------ is 71 23-70 
