48 



Stations. 



541. London 



551. Salisbury .... 



561. Dover 



571. Fontainebleau 



581. Nimes 



591. Malaga 



601. Prague 



611. Berne 



621. Seelau 



631. Rome 



641. Milo 



651. San Diego .... 



661. At sea 



671. At sea 



681. At sea 



Teneriffe 



691. At sea 



701. At sea 



711. Socorro Island 



721. Ulean 



731. At sea 



741. La Guayra 



751. Morales 



761. At sea 



771. St. Thomas "I 

 Fernando Po l> 

 Isla das Rolhas J 



At sea 



At sea 



Pasto 



At sea 



At sea 



Pulo Kumpal. 

 Shell Rock.... 

 Gonzanama . 



At sea 



Tomependa . 



Huaura 



At sea 



At sea 



At sea 



At sea 



Bow Island . 



At sea 



St. Helena .... 



At sea 



At sea 



Mauritius .... 



At sea 



At sea 



At sea 



LioX. IN . 



Long.E. 



A Z. 



/ 









+ 





5^ 31 



359 



53 



21-9 



51 4 



358 



12 



+ 



18-3 



51 » 



I 



19 



+ 



197 



4s 24 



2 



38 





I I'O 



43 5° 



4 



20 



— 



3*8 



36 44 



355 36 





i3"4 



50 5 



14 27 



+ 



i5'5 



46 57 



7 



25 





I2*0 



49 3^ 



15 



17 





21*6 



41 54 



12 



26 



4- 



5'o 



36 43 



24 27 



+ 



i9'6 



32 41 



242 



27 



— 



70*6 



47 7 



346 54 





0-4 



44 22 



330 



54 



— 



18-3 



30 



318 



5 



— 



4" 3 



2o 27 



343 43 



— 



0-4 



2 1 32 



316 



43 



+ 



21-3 



23 12 



238 



9 





6l'2 



18 43 



249 



6 



+ 



28-0 



7 22 



143 



57 





IO-8 



8 55 



235 48 





27-8 



10 36 



292 



54 



+ 



2-6 



8 15 



286 









7-0 



10 7 



319 



SI 



+ 



48-9 



I 23 



7 



20 







35'8 



3 47 



162 



59 



+ 



82 



— 2 2 



236 



4 



+ 



317 



I 13 



282 



39 



— 



13-0 



5 451 331 



9 





8'4 



5 37 



341 



3 



+ 



io*8 



- 2 44 



110 



7 





i6*8 



- I 57 



136 



21 



+ 



1*4 



- 4 13 



280 



27 





4' 5 



-- I 10 



223 



32 





19-9 



- 5 31 



281 



24 



+ 



lO'I 



-II 3 



282 



14 



1 



+ 



12-9 



— 27 



324 44 



1 



+ 



52*2 



- 8 10 



339 



50 





21*1 



-11 54 



214 



37 





9 '4 



-13 9 



251 



20 



+ 



57'o 



-18 5 



219 



7 



+ 



7*5 



-19 56 



325 



5 





207 



-15 55 



354 



17 



+ 



147 



—26 25 



49 



12 





17-1 



-21 54 



53 









20-0 



— 20 9 



57 



31 





o'5 



— 22 41 



69 54 





267 



— 22 38 



76 



10 





17-4 



-22 34 



80 



10 





22'I 



Observers. 



All Observers. 

 Lloyd, Ross. 

 Sabine. 

 Fox. 



Fox, Humboldt. 

 Norvs^egian Officers. 

 Keilhau, Kreil. 

 Fox. 

 Kreil. 



Humboldt, d'Abadie, Quetelet 



Norwegian Officers. 



Belcher. 



Sulivan. 



Erman. 



Sulivan. 



("Humboldt, Freycinet, Du- 

 ■I perrey, Sabine, Bethune, 

 j_ Wickham, Sulivan. 

 Sulivan. 

 Erman. 

 Belcher. 

 Liitke. 

 Erman. 

 Humboldt. 

 Humboldt. 

 Sulivan. 

 The secular change at this 

 station is uncertain ; 7 

 take the mean of the in 

 clinations by Sabine and 

 Allen; the force at St. 

 Thoraas, from Sabine. 

 Liitke. 

 Liitke. 



Humboldt and Bousingault. 



Erman. 



Dunlop. 



Belcher. 



Belcher. 



Humboldt. 



Erman. 



Humboldt. 



Humboldt. 



Sulivan. 



Dunlop. 



Erman. 



Liitke. 



Belcher. 



Sulivan. 



All Observers. 



Moore and Clerk. 



Moore and Clerk. 



Duperrey, Fitzroy, Moore and 



Dayman.. [Clerk 



Dayman. 



Dayman. 



