ON SELSMOLOOilOAL lNVKSTiUATlONS. 



37 



Intensity. 



r\> 



01 



ro 



w 



Ul 



o 



3 



►a 



to 

 H 



fr. 



ff) 



0> 



ro 



u 



(S 



v — 1717 



1739 



1761 



1783 



!805 



!827 



1843 



