POLARIZED SPECTRA OF DOUBLE CHLORIDES. 



107 



The absorption group of the uranyl ammonium chloride is very 

 similar to that of the potassium chloride. Again, the b g component, 

 like the B g component, is absent, but the other fluorescence series are 

 represented by absorption series, save that no component of d was 

 found to join the very weak D w fluorescence band. 



Uranyl rubidium chloride shows a grouping analogous to that of the 

 potassium and ammonium chloride, while the uranyl caesium chloride 

 group is only slightly different. 



A b g series is present, which is properly related to the B g series, so 

 that b g and b w are the same relative positions as are B g and B w . 



POLARIZED ABSORPTION GROUPS +20 



URANYl POTASSIUM CHLORIDE 



r\ 



GREEN 



WHITE 



URAMYL RUBIDIUM CHLORIDE 



ttREEN 



WHITE 



I 



URANYL AMMONIUM CHLORIDE 



GFEEN 



Wl ITE 



URANYL CAESIUM CHLORIDE 



GREEN 



WHITE 



FIQ. 72. 



No green polarized component joins the C g component. The dotted 

 line shows where an absorption component would have to be placed to 

 have the proper relation, according to our theory. The c g band is 

 evidently complex. c w is present, however, as a single band, and the 

 d, e, and a components occupy positions which agree with their corre- 

 sponding fluorescence components, bw and aw are here separate. 



