r 



Phase Change by Reflection 



13 



nearly complete below 415 /a/a. The region above 430 /a/x as far as 

 recorded is nearly as transparent as the glass plate. The films of 

 both cyanin and aniline-orange gave Newton's colors in reflected 

 light. 



TABLE 3 

 Phase Change 



In general the results obtained leave much to be desired in 

 accuracy of measurements ; however, in all cases the form of the 

 curves seems to be fairly well established. 



In conclusion the writer wishes to thank Professor Skinner for 

 suggesting the problem and giving many other helpful suggestions 

 in the course of this investigation. 



179 



