LIEUT.-COLONEL SABINE ON TERRESTRIAL MAGNETISM. 



23 



has been given an equal influence on the general mean, without reference to the 

 number of observations which were made with it. 



Table VII. — Abstract of observations with the Intensity Needles, Nos. 5> 6, 7, and 8, at the undermen- 

 tioned Stations. 



Station. 



1837. 



Needle. 



Time. 



Therm. Corrected Time. 



Remarks. 



Panama 



Port Etches 



Acapulco 



Callao. 



{ 



Puna Island (Guayaquil) < 



Panama 





Panama 



March 10 



March 10 



March 10 



March 10 



March 12 



March 12 , 



August 28 . . . , 

 August 28 . . . . 



1838. 

 January 17 ... 

 January 17 . • . . 

 June 20 and 21 



June 25 



June 27 



June 27 



September 23 . 

 September 23 . 

 September 23 . 

 September 17 . 

 September 17. 

 September 19 . 

 September 20 . 

 September 20 . 

 October 28 . . . 

 October 28 . . . 

 October 28 . . . 

 October 28 . . . 



1839. 



March 16 



March l6 



March l6 



March l6 



March l6 



March l6 



5 

 5 

 6 

 6 



7 



8 

 5 

 6 



6 



7 



5 

 6 

 7 

 8 

 5 

 6 

 6 

 6 

 6 

 6 

 6 

 6 

 5 

 6 

 7 



8 



5 

 5 



7 

 7 



8 



471-7 

 473-7 



512-5 

 512-6 

 532-7 

 470-4 

 736-7 

 792-4 



508-1 

 530-7 

 487-1 

 525-0 

 546-1 

 483-8 

 476-1 

 514-3 

 515-3 

 517-5 

 517-4 

 517-1 

 509-7 

 510-8 

 475-3 

 514-6 

 536-8 

 471-4 



476-4 

 476-1 

 536-8 

 535-3 

 471-8 

 471-0 



79 \ 

 79/ 



80 1 

 72/ 

 71 

 76 

 50 

 50 



88 

 91 



68 



79 



72 



70 



78 



79" 



78 



99 



99 



93 



86 



88 



82"? 



82? 



82? 



82? 



84] 



85 j 

 801 

 88 J 

 881 



86 I 



s 



470-4 



510-4 



531-2 



468-4 

 738-7 

 794-5 



504-5 

 526-5 

 486-1 

 522-4 

 544-6 

 482-6 

 473-7 



510-5 



472-6 

 511-7 

 533-7 

 468-7 



473-2 

 532-9 

 468-1 



Chron. L. 8«-6. 

 Chron. L. 8»-6. 



Mean of 80 observations. 



Mean of 90 observations. 

 > P Spanola. 



I P» Arena. 

 P* Barranca. 

 Town of Puna. 



»Therm. not recorded. 



Table VIII.— Observed values of the Horizontal Intensity 



