AS MEASURED BY MEANS OF THE KADIOMICROMETER. 



69 



tively, the corresponding depths of absorbing layers being 2.5, 5, 10, and 

 20 mm., respectively. Here again it is seen that the conditions of Beer's 

 law are adhered to. The results are graphically represented in figs. 22 to 25, 

 inclusive. These curves show minima in about the same positions as did the 



100 



z 

 o 



l/> 

 I 75 



LU 



o 



a 50 



25 



Neodymium Chloride 



Cell Depth 2.5mm. 

 Concentration 0.536 N. 



065// 



0.7// 



0.75// 0.8// 



Fig. 22. 



085// 



09// 



0.95// 



100 



75- 



2 

 O 



50 



Id 



LU 



a. 



25 



Neodymium Chloride 



Cell Depth 5mm. 

 Concentration 267N 



0.65// 



0.7// 



0.75// 0.8// 



Fig. 23. 



0.85// 



0.9m 



0.95// 



curves representing the more concentrated solutions, but since the solutions 

 are more dilute, they are accordingly more transparent; hence the minima 

 in the curves are not so pronounced. The maximal absorption occurring 

 near X7300 and X7900 are at about 25 per cent. 



