26 Transactions of tlic South African Philosophical Society. 



Date. Cape Time. Needle. Inclination. 



1857. Jan. 9 10.10 a.m. 2 (new pair) 54"25'-7'] 



,, 13 10.8 „ 2 „ 54 19-9 | 



,, US 10.8 ,, 2 „ 54 25-5 J- 



,, 20 10.8 „ 2 „ 54 21-9 | 



,, 31 10.8 ,, 2 „ 54 22-0 J 



1857. Feb. 3 10.28 ,, 2 (new pair) 54 18-9 ) 



„ G 10.12 ,, 2 ,, 54 19-9 ) 



1858. Mar. 16 10.30 ,, 2 (new pair) 54 29-3 



1871. Aug. Ifi about noon 2 55 46-5 



,, 30 about noon 1 55 44-2 



1871. Sept. 28 noon 1 55 34-9 



Monthly Mean. 

 54° 23'-0 



54^^ 19' -4 



APPENDIX III. 



The following results are the monthly means of the horizontal 

 intensity obtained by experiment at the Eoyal Observatory, Cape of 

 Good Hope, at the dates given. The total intensity is calculated 

 from the ol^served values of dip and of horizontal intensity. 



Date. 



1843. 



1844. 



1845. 



1846. 

 1847. 



1848. 









Cape 



Town. 













H. Total Intensity. 



Date. 



H. 



Total Intensity. 





eg 



s. units. 



c.g.s. units 







eg 



.s. units 



c.g.s. units. 





July 



•2084 



•3489 





1853. 



June 



•2056 



•3510 >| 





Oct. 



•2093 



•3506 \ 







July 



•2056 



•3513 





Jan. 



•2070 



•346)7 







Aug. 



•2057 



•3512 





Apr. 



•2067 



•3471 



O 





Sept. 



•2054 



•3513 





July 



•2069 



•3473 







Oct. 



•2055 



•3511 





Feb. 



•2085 



•3500 





Nov. 



•2055 



•3511 





Mar. 



•2083 



•3496 



o 





Dec. 



•2055 



•3511 





Apr. 



•2077 



•3488 





1854. 



Jan. 



•2054 



•3513 





May 



•2084 



•3496 ^ 



^ 





Feb. 



•2048 



•3507 





June 



•2082 



•3493 







Mar. 



•2050 



•3519 





Apr. 



•2080 ^ 









Apr. 



•2050 



•3519 





Dec. 



•2080 









May 



•2050 



•3517 





Jan. 



•2080 









June 



•2050 



•3515 



S 



Feb. 



•2078 









July 



•2049 







Mar. 



•2077 









Aug. 



•2050 





c3 



Apr. 



•2076 









Sept. 



•2049 





<» 



May 



•2077 









Oct. 



•2048 







June 



•2079 









Nov. 



•2049 







July 



-2078 



- Sm alley. 







Dec. 



•2050 



•3523 





Aug. 



•2078 







1855. 



Jan. 



•2050 







Sept. 



•207() 









Feb. 



•2048 



•3519 





Oct. 



•2074 









Mar. 



•2047 



•3521 





Nov. 



•2073 









Apr. 



•2049 



•3523 





Dec. 



•2073 









May 



•2047 



•3521 





Jan. 



•2073 









June 



-2047 



•3514 





Feb. 



•2071 







* 



July 



-2047 



•3518 





Mar. 



•2072 









Aug. 



•2048 



•3518 





