I916. No. I. ARE THE SOLAR CORPUSCLE RAYS NEGATIVE OR POSITIVE? 27 



During the positive polar storms with maximum on the afternoon side 

 of the earth I must assume that the incoming rays on an average bend 

 ivestwanh just over the auroral zone, before thes' leave the earth. 



When the two storms are superposed on one another or when thev 

 directly succeed one another, som.e rays relatively few to the total bulk 

 form an auroral curtain, these rays having such direction with reference 

 to the magnetic lines of force that they penetrate sfraig/i/ doivn towards 

 the earth so deeply into the atmosphere that they are totallv absorbed 

 before they can turn round and escape into space again. 



It is some tew rays of this kind that Professor Stormer erroneously 

 assumes to have been the cause of the intervening positive magnetic storm 

 on the night of March, ii — 12, 1913. 



I will not enter into further criticism of his reasoning, but as apart 

 from the above mentioned principal objection, there is good cause for 

 several other serious remarks, I do not think that an}- physicist will accept 

 such interpretations as those put forward by Professor Stormer. 



p. t. Hehvan (Egypt) October 1915. 



