MAGNETIC OBSERVATIONS. 



fil 



Taking the means we obtain the final values of the magnetic elements at each 

 station, as follows : 



Station. 



Latitud 



e. 



3 

 



-~ 



Date. 



Declination. 



— 



Inclination. 



J. 

 z 



a 



i 



G 'J 



8 a 

 X 



-i 



: 

 



i 



1 



•a s 



H 



Philadelphia, Pa. 



• 39° 



56' 



X. 



75° 



7' 



Oct. 



24, 



1865 







, 







, 



4.148 







Gosport 



• 36 



49 



N. 



76 



«7 



Oct. 



29. 



1S65 



2 



37.8 W. 



1 



+69 



38 



2 



4-713 



2 



12.696 



13- 542 



St. Thomas . . . 



. 18 



20 



N. 



64 



55 N°v. 



14, 



1865 



O 



39.6 E. 



1 



+49 



38 



4 



6.75S 



2 



7.950 



'0-434 



Salute Islands . . 



• S 



'7 



N. 



52 



33 



Nov. 



2S, 



1865 



O 



3.8 W. 



1 



+ 34 



35 



2 



6.742 



1 



4.648 



8.189 



Ceara 



• 3 



44 



S. 



3S 



3' 



Dec. 



'3. 



1865 



8 



28.8 W. 



I 



+21 



23 



2 



6.507 



1 



2.548 



6.988 



Pernambuco . . . 



. 8 



4 



S. 



34 



52 



Dec. 



23. 



1865 



10 



59.6 W. 



1 



+ 12 



8 



2 



6.392 



1 



1-374 



6.538 



Bahia 



. 12 



57 



S. 



38 



3° 



Dec. 



27. 



1865 



7 



56.6 w. 



1 



+ 4 



24 



2 



6.213 



1 



0.478 6.231 



Rio Janeiro . . . 



. 22 



54 



s. 



43 



8 



Jan. 



8, 



1866 



2 



41.8 W. 



1 



— 11 



47 



2 



5-952 



2 



1.242 6.0S0 



Monte Video . . 



• 34 



53 



s. 



56 



«3 



Jan. 



18, 



1866 



9 



20.8 E. 



2 



— 31 



6 



3 



6.040 



3 



3.644 7.054 



Sandy Point . . . 



• 53 



10 



s. 



70 



54 



Feb. 



7. 



1866 



21 



52.0 E. 



1 



—54 



57 



2 



6.121 



1 



S.725 



10.658 



Valparaiso .... 



• 33 



2 



s. 



7' 



4' 



March 



29, 



1866 



«5 



Si. 1 E. 



6 



—35 



23 



12 



6.326 



.x 



4-493 



7-759 



Callao 



. 12 



5 



s. 



77 



'7 



April 



26, 



1866 



10 



29.6 E. 



1 



— 6 



28 



2 



7.001 



I 



0.794 



7.046 



Payta 



• 5 



6 



s. 



81 



6 



May 



7. 



1866 



8 



53.0 E. 



1 



+ 4 



58 



2 



7-359 



I 



0.640 



7-3S7 



Panama Bay . . . 



. 8 



54 



N. 



79 



3° 



May 



14. 



1866 



5 



55.8 E. 



1 



+31 



56 



2 



7.614 



I 



4-745 



8-972 



Acapulco .... 



. 16 



5° 



N. 



99 



52 



May 



30. 



1866 



8 



22.2 E. 



2 



+39 



54 



2 



7-740 



I 



6.472 



10.089 



Magdalena Bay . 



• 24 



40 



N. 



112 



7 



June 



9. 



1866 



10 



40.5 E. 



1 



+4S 



32 



2 



7.176 



2 



8.120 



10.837 



San Diego Bay . 



■ 32 



42 



N. 



»7 



«3 



June 



15. 



1866 



13 



9.4 E. 



1 



+57 



54 



2 



6.261 



I 



9.981 



11.782 



San Francisco . . 



■ 37 



49 



N. 



122 



21 



June 



26, 



1866 



16 



25.5 E. 



1 



+62 



22 



2 



5-643 



I 



10.779 



12.167 



Washington . . . 



■|3S 



54 



N. 



77 



3 



Nov. 



1 



1866 



2 



44.2 W. 



1 



+ 72 



2 



2 



4.300 



1 



13.260 



I3-940 



