[mclennan-zumstein] spectra OF LEAD 17 



The series given above are put forward tentatively in the hope 

 that they may prove of service in drawing attention to a subject 

 which in the Hght of Mohler's, Foote's, and Stimson's experiments 

 on ionisation requires to be cleared up. 



The Physical Laboratory, 

 University of Toronto. 

 May 15, 1920. 



