AS MEASURED BY MEANS OF THE RADIOMICROMETER. 



75 



The minima of transmission fall at approximately tho same positions as 

 with the chloride and nitrate solutions discussed above, i. e., at X7300, X7950, 

 and X8750. As indicated by the photographic method, the solutions of neo- 

 dymium acetate have greater absorbing powers for a given concentration 

 than either the chloride or nitrate. 



100 r 



75 



z 

 o 

 in 



50 



o 



UJ 



(J 



UJ 



a. 



25 



Neodymiurn Acetate 



Cell Depth 10 mm 

 Concentration 0.I54N 



0.65a 



0.7// 



0.75a 



0.8// 

 Fig. 32. 



0.85a 



0.9a 



0.95a 



100 



75 



o 



ijj 



UJ 



u 

 or 



0_ 



50- 



25 



Neodymiurn Acetate 



Cell Depth 20mm. 

 Concentration 0.077 N 



0.65a 



0.7a 



0.75// 0.8a 



Fig. 33. 



0.85// 



0.9// 



0.95a 



The small band near X7000 appears slightly more intense with the acetate 

 than with equal concentrations of the other salts; and the more intense bands 

 X7300, X7950, and X8750 show the same general tendency to have their 

 minima lowered with increasing dilution. This set of curves shows in a 

 marked way the rapid increase in the absorption near X9500, which is due to 

 the water present in the solution and illustrates the difficulty that is met 



