1856.] 



Report on the Magnetic Survey. 



11 



11.83 



General mean. 



8.89 



10 

 10.81 



i— i 

 o 



CO 



*"* !>*» 



CO 



GO GO 



OS 



O CO 



LO 



X ** 



D* t~>. 



CO «5 



A. M. 



6 7 

 7.91 9.03 



co 



id °J 



CO 



CM 



CO "^ 

 CO 





CM 



2 <** 



3 





& 



CO 



co *? 



CO 



CO 



50 2 



LO 



cm «>. 



CO 



lO 



01 2 



CO 







£"" CM 



Means 



from 



May 10 to 16. 





93 



£ 



Cj 

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rH 



s 



s 



o 





«3 00H 

 CM GO CT> 



riC © 



cm 



^f o — » 



lOCW 



odd 



TT 00 Tf 

 LO r-H 1>» 



os oJ d 



CO CM IO 



r-H Tf CO 



CO CO Tt* 

 CO rr LO 



I>.OS|>» 



CO GO lO 



lO* U3 CO* 



O CO CM 



"— J OS t>» 



co' LO CO* 



co »o LO 

 CO O OS 



CO r-i CM 



CM gj-H 



ci 3 S 



d S^ *^ 

 S o o o 



CM CM ^ 



"§"j5"j>"» 



co — • co 



OS OS CO 



- 



0> GO CO 



io h q ■ 

 co*co"i>*. 



o 



Tf CO o 

 t-.ro CO 

 CO CO !>*. 



OS 



1— 1 l>.LO 



CO 



CO CM CM 



^ OS CO 



t>lco* r>*. 





CO CO CM 



CO CM r-i 



p" 



CO 



t>.Tf CM 



r-; GO CO 

 CO t^CO 



LO 



© o »o 



CO LO TP 



CO GO oi 



VI 



CO CO rH 

 © O !>» 



OiOiCTi 



O rfl -h 



CO CO —i 



CM 



CO CM — « 



^ CM cc rr 

 4ft ^^~ 



