100 



OBSERVATIONS OF THE MAGNETIC INTENSITY, &C. 



The results are arranged in the order of the total intensities and columns are 

 inserted for the latitude and longitude of the places. 







Latitude. 



Longitude 

 from 







Horizontal 



Dip. 



Total 



No. 

 1 



Place. 





Paris. 





Date. 



Intensity. 





Intensity. 



o 



/ 







/ 



Paris = 1. 







/ 



Paris = 1. 



Edinburgh. 



55 



57 N. 



5 



32W. 



Feb. 



3, 1837. 



0.841 



* 



* 





2 



Dublin. 



53 



23 » 



8 



41 " 



Nov. 



20, 1836. 



0.879 



* 



* 





3 



London. 



51 



31 " 



2 



26 " 



June 



16, 1837. 



0.939t 



69 



16.0 



1.021 



4 



Brussels. 



50 



51 " 



2 



02 E 



July 



25, 1838. 



0.969 



"^ 



* 





5 



Berlin. 



52 



32 " 



11 



02 " 



Dec. 



16, 1837. 



0.979 



68 



08.5 



1.014 



6 



Paris. 



48 



50 " 







00 " 



Aug. 



17, 1837. 



1.000 



67 



20.8 



1.000 



7 



Vienna. 



48 



13 " 



14 



02 E. 



March 23, 1838. 



1.090 



64 



49.7 



0.989 



8 



The Flegiere. 











Aug. 



26, 1837. 



1.099 



64 



35.8 



0.987 



9 



Brientz. 











Sept. 



22, " 



1.078 



65 



06.7 



0.987 



10 



The Faulhorn. 











Sept. 



20, " 



1.082 



65 



01.7 



0.987 



11 



Geneva. 



46 



12 " 



3 



49 " 



Aug. 



25, " 



1.086 



64 



49.8 



0.984 



12 



Chamberi. 











June 



21, 1838. 



1.089 



64 



35.0 



0.979 



13 



Chamouni. 











Aug. 



26, 1837. 



1.088 



64 



38.2 



0.979 



14 



Lyons. 



45 



46 " 



2 



29 " 



June 



25, 1838. 



1.078 



64 



49.0 



0.978 



15 



Milan. 



45 



28 " 



6 



51 " 



June 



10, " 



1.111 



63 



54.7 



0.972 



16 



Venice. 



45 



26 " 



10 



01 " 



April 



11, " 



1.129 



63 



21.9 



0.971 



17 



Trieste. 



45 



38 " 



11 



27 " 



April 



4, " 



1.128 



63 



20.5 



0.970 



18 



Florence. 



43 



47 " 



8 



55 " 



May 



28, " 



1.170 



62 



05.5 



0.965 



19 



Turin. 



45 



04 " 



5 



20 " 



June 



17, " 



1.094 



63 



52.2 



0.959 



20 



Eome. 



41 





10 



10 " 



May 



18, " 



1.225 



60 



14.0 



0.952 



21 



Naples. 



40 



52 " 



11 



57 " 



May 



7, " 



1.249 



59 



05.1 



0.938 



Dip not observed. 



t Mean of results in June, July, and August, 1837, and in July and August, 1838. 



ERRATUM. 

 Page 96, (in table,) column headed "No. of Oscillations," first line, for 150, read 350. 



