PhilMag.S.5:Vol 



PLY 











O 











o 



? 







CS 











(.15 



1 



to 



. 1 







1 



UU 



Fig.l. Prijrvotjry curve of ' th&Eycbrcgen. Spectmcrrv. 







c 



O 











o> 



1 



00 



! 



1 



^■2. 



11 1 1 1 1 

 Derived, ou/ve of -the Bycfrn 











<o 







«0 



tf> 



igen opet tr van , 



W&al Nov ■ • ■ 



