190 Transactions of the Boyal Society of South Africa. 
Hutchinson. (2, 3; 
. 4, 7) 
Date. 
Declination. 
Dip. Horizontal Intensity. 
1913-48 
25° 10'-9 W. 
60° 47'-4 S. 
•17393 
1911-49 
25 34-2 
60 31-9 
•17596 
1908-48 
26 05-4 
60 09-4 
•17920 
1904-48 
26 39-8 
59 40-0 
•18231 
1900-03 
27 15-7 
59 06-3 
•18615 
1899-52 
59 03-9 
•18624 
1898-29 
58 52-6 
Secular Variation. 
1913-48-1911-49 = 1-99 yrs. -ll'-6 +7'^8 -lOly 
1911-49-1908-48 = 3-01 yrs. -10-4 +7-5 -108y 
1908-48-1904-48 = 4-00 yrs. -8-6 +7-4 -78y 
1904-48-1900-03 = 4-45 yrs. -8-0 +7-6 -87y 
1900-03-1898-29 = 1-74 yrs. +7-8 
1913-48-1900-03 = 15-45 yrs. - 9-3 
1913-48-1898-29 = 15-19 yrs. +7-5 
1913-48-1899-52 = 13-96 yrs. - 88y 
Illovo River. (2, 3, 7) 
Date. Declination. Dip. Horizontal Intensity. 
1913-51 21°25'-8 62° 07'-7 '17131 
1908-51 22 43-7 61 41-8 -17623 
1903-85 23 47-4 61 21-6 -17977 
Secular Variation. 
1913-51-1908-51 = 5 yrs. -15'-6 +5'-2 -98y 
1908-51-1903-85 = 4-66 yrs. -13-6 +4-3 -76y 
1913-51-1903-85 = 9-66 yrs. -14-6 +4-7 -87y 
Karree. (2, 4) 
Date. Declination. Dip. Horizontal Intensity. 
1911-51 21° 54'-2 W. 60° 10'-2 S. ^17826 
1903^43 23 27-9 59 19-0 -18548 
1911-51-1903-43 = 8-08 yrs. 
Secular Variation. 
-ll'-5 +6'-3 
-89y 
