lO 



Oliver H. Gish 



spectrum here investigated (Table 2, Fig. 2). The transmission 

 of this film was determined in the same way as for fuchsin, and 

 it was found that between 495 and 487 iifi, and between 389 and 



.so 



so 



o, 



Z)00 



'W) 



soo 



GOO /«/> 



.SO 

 AO 

 .SO 



zo 



.10 

 o 



JBO 

 .40 

 .50 

 .ZO 

 .10 

 



Dopptl Grun 



/fofi'mo of Tronstrtisiion 



• ' • 1 ■ ' ■ ■ L. 



3CO Q 



■foe 



goo 



600 /x,/i 



CrysfalViolef 



500 



40Q 



SOO 



eoo ^^ 



Fig. 3. 

 176 



