CLIMATOLOGY 



seemed to be more abundant after 7:30 p.m., and had 

 little color except the usual yellowish green. Arches, 

 curtains, and searchlights are the chief shapes. He 

 noted that the display often began to the north, passed 

 east behind Erebus and drifted to the south. They 

 thus kept away from the Magnetic Pole, which lay 

 to the northwest. No very definite results could be 

 expected with regard to their relation with magnetic 

 storms, for the aurora watch was spoiled by frequent 

 blizzards and w^as never really continuous. However, 

 Dr. Chree found that in 191 1 41 per cent of the most 

 striking aurora were associated with very marked mag- 

 netic disturbances. Pouting was unable to photograph 

 the auroras and w^e are not clear as to their origin. 

 Arrhenius believes that negatively-charged particles are 

 driven through the sun's atmosphere by light-repulsion 

 and reach the earth's atmosphere, thus forming auroras. 



