MAGNETIC O B S E It V A T 1 N S. 



Ill 









Horizontal Intensity 



. Observations of Deflections. 









St. Thomas, November 13, 1865. 



St. Thomas, November 



13, 1865. 



1 



X , 



Time. 



Temp. 



w .5 



C | 



Diff's. 



nisi. 



c U • 



Time. Temp. 



"b "3 



| % 'Dili's. 



Dist. 



S 



c c 





/ 



M | 



5 S 







2 S 



5 a " 



/ 



03 1 



< S 







W. 



2" 5 m 



87°. 



46 d .4 











w. 



2" 15- 85. 



6i". 7 







to 



K. 







108. 1 



*'■•'- 1 



Si*.? 





j 



]■:. 







93-2 



6l d .6 . , 

 „, , 3' d -6 

 93-2 | 





$ 



W. 







46.4 



10S. I 







w. 







61.6 





K. 







10S.1 







q 





E. 







93-3 



1 





















d 





E. 







108.3 









E. 







93-2 





'? 



J 



W. 







46.8 



108.4 



g , 



II 



• 



\Y. 







61.6 



93-2 ,. _ 



II 



rt 



E. 







108. s 



46.S 





!* 



S3 



E. 







93-3 



61.5 J '' 7 



i. 





W. 



2 15 



85. 



46.9 









w 



W. 



2 35 



85. 



61.5 



















61.65 



















Means 





86.0 



2U d 



Means 





S5.0 



2U d 



31-65 





Coefficient of torsion, v = 4. So div. 







St. Thomas, November 



16, 1S65. 





St. Thomas, November 



16, 1865. 



| 



3 



3 r 



a - 



Time. 



Temp. 



t 



Si 



■J c 



5 ^ 



Diff's. 



Dist. 



s 



y, v 



Time. 



Temp. 



v 5 



13 "3 



1 1 



Diff's. 



Dist. 





w. 



[2 b [0 ni 



90.° 



43 d - ^ 











w. 



I2 h 20 m 



87.° 



58".7 









~ 



E. 







i°5-3 



43 d - b 



6i 4 .7 





J 



E. 







90.4 



5S".6 



3i*.8 





> 



W. 







43-7 



>°5-3 





J3 



W. 







5S.6 



90.4 







E. 







i°5-3 







£ 



'" 



E. 







90.4 





























£ 





E. 







105.6 











E. 







90.4 







*C 



j 



W. 







43-9 



105.5 



61.7 



II 



^ 



W. 







59-i 



90.4 



3i-4 



II 



a 



e. 







105.5 



43-8 



k 



& 



E. 







90.5 



59.0 



>- 





w. 



12 20 



87. 



43-S 











W. 



.2 3° 



87. 



5S.9 

























Means 





88.5 



2u d 



61.70 



Means 1 



87.0 





2U d 



31.60 





Coefficient of torsion, z/ = 



4.55 div. 





Salute Islands, November 28, 1865. 



Salute Islands, Novembe 



r 28, 1S65. 



c 



_£ 



Time. 



Temp. 



Si 



e c 



Diff's. 



Dist. 



c 



j- 



Time. 1 Temp. 



v .5 



§ | 



Dili's. 



Dist, 



3 



3 ? 





t 



*l 



<"• 







3 



3 S 



1 t 



w| 



5 S 









w. 



I2» 15" 



91.° 



41''. I 











W. 



I2 h 25 m , 9O. 



S<<*.3 









<j 



E. 







102.5 



4 I*.I 



6i d .4 





~ 



E. 





87.8 



56"- 3 



3i"-5 







w. 







41. 1 



102.5 







W. 





56.3 



87.8 







E. 







102.5 













E. 





87.8 





















1 





a 





E. 







102. S 









E 







SS.o 







ri 





W. 







41-3 



I02.S 



61.5 



ii 





W. 







56.4 



SS.o 



31.6 



II 



y 



K. 







102.9 



4i-3 



k 



s 



E. 







88.0 



56.4 



V 



w 



W. 



12 25 



90. 



41-3 









w 



\V. 



12 35 89. 



56.4 

























Means 





90.5 



2U d 6I.45 



Means 





89-5 



2U d 



3'-55 









Coefficie 



nt of to 



'sion, 7' = 



4.02 d 



v. 





















