Secular Variation of the Magnetic Elements. 
203 
Spring-fontein. 
-Latitude 30° 16'-7 S. 
Longitude 25° 44' 0 E. 
Eepeat station. (See " Eeport," Appendix, p. 177.) 
Date. 
1913 June 26 
Declination (D). 
G.M.T. 
8.32 a.m. 
9.01 a.m. 
10.35 a.m. 
12.31 p.m. 
1.21 p.m. 
D (observed). 
24° 00'-8 W. 
24 01-7 
23 59-3 
23 55-7 
23 56-5 
Observer. Instrument. 
Beattie 73 
Dip (0). 
1913 
Date. 
G.M.T. Needle. 
9 (observed). 
Observer. 
Instrument. 
June 26 
11.34 a.m. l,^^ 
61° 22'-6 S. 
Beattie 
9 
11.34 a.m. 5^42 
61 21-8 
11.34 a.m. 2,^3 
61 21-8 
11.34 a.m. 6^42 
61 21-9 
Horizontal Bitensity (H). 
Date. 
G.M.T. 
H (observed). 
Observer. 
Instrument. 
June 26 
9.17 a.m. V 
9.46 a.m. D 
H30 -17177 
Beattie 
73 
10.17 a.m. V 
-17179 
