L. vegard: distribution of matter etc. M.-N. Kl. 1923. No. 10 



heated to a temperature of some hundred degrees centigrades and exposed 

 to cathode rays, does not emit the auroral spectrum, the assumption of a 

 high temperature must be abondoned. 



There should be no very great difficulty in producing the Nitrogen 

 or air spectrum under such conditions, and 1 hope to be able to carry out 

 such experiments at my laboratory. 



Printed, October 31st, 1923. 



