DESCRIPTION OF THE PLATES. 155 



Plate 84. A. Uranous Chloride in Water. Concentration constant. Depth of cell, 1.2' 



2, 4, 8, 16, and 32 mm. 



B. Uranous and Aluminium Chlorides in Water. Depth of cell, 1.2, 2, 4, 8, 

 16, and 32 mm. 

 Plate 85. A. This spectrogram shows the absorption of Uranous Chloride in Acetone to 

 which more and more Water is added. The "Water " and "Acetone " 

 bands appear on this plate. 

 B. This spectrogram shows the same process, a more concentrated solution of 

 Uranous Chloride in Acetone being used in this case. 

 Plate 86. A. Uranous Chloride in Glycerol and mixtures of Glycerol and Water. The first 

 strip represents the absorption of a 6 mm. solution of Uranous Chloride 

 in Glycerol. Succeeding strips show the effect of the addition of Water. 

 B. This is exactly similar to A except that Methyl Alcohol was added instead 

 of Water. 

 Plate 87. A. Uranous Chloride in Methyl Alcohol. Concentration constant. 



B. Uranous Acetate in Methyl Alcohol. Concentration constant. 



C. Uranous Chloride in Glycerol. Concentration constant. Depth of cell, 



3, 4, 6, 9, 13, 18, and 24 mm. 



Plate 88. A. Uranous Chloride in Ethyl Alcohol. Concentration constant. Depth of 

 cell, 3, 6, 12, 24, and 35 mm. 

 B. Uranous Chloride in Methyl Alcohol. Concentration constant. Depth 

 of cell, 3, 6, 12, 24, and 35 mm. 

 Plate 89. A. Uranyl Chloride in Methyl Alcohol to which Water is added. 



B. Uranous Chloride in Methyl Alcohol. Concentration constant. 

 Plate 90. A. Uranous Chloride in Acetone. Depths of cell, 5, 6, 8.3, and 15 mm. The 

 first strip represents Uranous Chloride in Acetone, and the following 

 strips represent the same to which Hydrochloric Acid had been added. 



B. In this case Uranyl Chloride instead of Uranous Chloride was used. Depth 



of cell, 2, 3.4, 4, 5, 11, and 30 mm. 



C. Strips 1, 2, and 3 represent the same effect as A. 



Strip 4 represents an Ether solution of Uranous Chloride. 

 Strips 5, 6, and 7 the absorption of 2, 5, and 14 mm., respectively, of Ura- 

 nous Chloride in Acetone. 

 Plate 91. A. Uranous Bromide in Methyl Alcohol. 



B. Uranous Acetate in Water to which more and more Nitric Acid is added. 

 Plate 92. A. Uranous Bromide in Water, Beer's law test. The original solution con- 

 sisted of an 0.8 mm. layer. To this was added Water so as to make the 

 depth of solution 2.8, 6, 12.5, 22, and 35 mm. 

 B. Uranous Bromide in Glycerol. 0.06 normal Concentration. Depth of cell, 

 5, 7.5, 10, 15, 20, 26, and 33 mm. 

 Plate 93. A. Uranyl Nitrate in Nitric Acid to which Sulphuric Acid is added. Depth 

 of cell, 8, 8.4, 9, 12, and 17 mm. 

 B. Uranous Acetate in Acetic Acid to which Hydrobromic Acid is added. 

 Depth of cell, 22, 22.3, 24, 30, and 36 mm. 

 Plate 94. A. An Acid Solution of Uranous Chloride to which Ethyl Alcohol is added. 

 Depth of cell being 4.5, 5, 7, 15, and 35 mm. 

 B. Uranous Chloride in Water to which Acetic Acid is added. Depth of cell, 

 5, 5.8, 7.5, and 26 mm. 

 Plate 95. A. Uranous Chloride in Acetone. Depth of cell varied. 



B. Uranous Chloride in Methyl Alcohol. Depth of cell, 2.4, 6, 8, and 12 nun. 



C. Uranous Chloride in Glycerol. Depth of cell, 2, 4, 6, 8, 12, and 24 mm. 

 Plate 96. A. Uranous Chloride in Water to which Ethyl Alcohol is added. Depth of 



cell, 3.2, 4.4, 6.4, 12, and 22.5 mm. 



B. Uranous Acetate in Water. Depth of cell, 3, 6, 12, 24, and 35 mm. 



C. Uranyl Acetate in Acetone and Acetic Acid. Depth of cell 3, 6, 12, 24, 



and 35 mm. 



