TOTAL SOLAR ECLIPSE 
May 18, 1901 
Magnetic Observations at Batavia and Karang Sago (Sumatra) 
BY 
W. VAN BEMMELEN. 
During the Sun-eclipse of May 28 1900 Dr. L. A. BAUER 
organised in the United States of North- America observations 
as to the deeclination and horizontal intensity, which, in 
connection with the registration of the vertical intensity at 
Toronto, led to the probable result that the eclipse caused 
in the atmosphere a phenomenon to be compared to a pole 
following the central shade on its way through our atmosphere 
and attracting the north-end of the needle. }) 
The insufficient number of stations of observation, the scan- 
tiness of the presumed influence in comparison with the ever 
to be expected irregular oscillations in the terrestrial magnetic 
force were, in consideration of the importance of a possible 
existence of that influence, sufficient occasion for BAUER to 
make a general appeal for a closer observation on May 18t® 
SR 
On behalf of the Batavia Observatory observations were 
made in the eclipse-camp at Karang Sago (Sumatra), while 
at Batavia observations were made possible, the Batavia 
Electric Car Company stopping its traffic in compliance with 
a request made by the Direction of the Observatory. 
1) Cf, Terrestrial Magnetism. V, 4. 
