68 



ABSORPTION SPECTRA OF A NUMBER OF SALTS 



Since, as mentioned above, the absorption bands with their centers near 

 X7300 and X7950, in solutions of such concentrations as are given in table 12, 

 reach complete absorption, and as in such cases it would not be easy to 



100 



z 

 Q 75 



5 



UJ 



53 50 



CL 



25 



0.65^ 



Neodymiurn Chloride 



Cell Depth 10mm. 

 Concentration 0.535N. 



0.75a 0.8m 



Fig. 20. 



0.85m 



0.9m 



0.95^ 



100 



y 75 



< 



z 



UJ 



o 



IT 



50 



25 



65m 



Neodymiurn Chloride 



Cell Depth 20mm. 

 Concentration 0.2G7N. 



0.7m 



0.75m 0.8m 



Fig. 21. 



0.85m 



0.9m 



0.95m 



detect any change in their intensity, it was thought advisable to make a 

 study of a series of more dilute solutions of the same salt. 



The results of this experiment are given in table 13. Reading from left to 

 right, the concentrations are 0.536, 0.267, 0.133, and 0.067 normal, respec- 



