CARL STORMER 



[No. 5 



of a few seconds gives as good an impression as a corresponding 

 number of minutes with other apparatuses. There vvas thus a 

 possibility of taking a number of photographs in succession during 

 the 2 minutes that the eclipse lasted. 



The place chosen as our station was Laksfors in Vefsen 

 65°37 / .6 N. Latitude, 13° 17'.0 E. Longitude, situated inland about 

 30 kilometres to the south of Mosjøen. I had also placed Bernt 

 Johannes Birkeland in Svenning Bay, about 35 km. to the south 

 of Laksfors, having received permission from the Telegraph 

 Department to make use of a Government Telephone line be- 

 tween Laksfors and Svenning Bay each night and during the 

 eclipse for the possible photographing of aurora. 



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SewtpetaXvifr&ivive 21-Q-191A 



Fig. 1. 



As my hearers are aware, the weather on the 21st August 

 was splendid and the air quite clear. 



The eclipse was an ever-memorable sight. The stars came 

 out, and the sky was of a rather light, bluish grey shade of 

 colour, which passed into bright yellow in the south. The corona 

 was magnificent, hut of no very great extent. No aurora was 

 visible. 



Mr. Oxaal observed the temperature during the eclipse. 

 It fell as much as 5 degrees Centigrade 1 (see fig. 1). The thermo- 

 meter was placed in the shade, facing north-east. 



The remarkable shadows that move over the ground just 

 before it becomes dark, and again just after it has grown light 

 again, were clearly seen, before and after the totality, upon a 



1 Professor Mohn told me that at Sandnæssjøen, on the coast, the fall 

 of temperature that he observed during the eclipse was only 1.3° Centi- 

 grade. 



