FROZEN SOLUTIONS. 



189 



UR. POTASSIUM SULPHATE IN SULPHURIC ACID. 



5:1 



4-2 



-30 



-60 



-90 



-120* 



-wo* 



/T\ 



-180 



leloo 



taloo 



zoloo 



52 1 



FIG. 93. 



TABLE 113. Uranyl potassium sulphate in water. Frequencies and average intervals of 



fluorescence bands. 



