150 



A STUDY OF THE ABSORPTION SPECTRA. 



Neodymium Bromide in Water. 1.66 normal. 45.6 mm. 



Temperatures, 6, 20, 33, 47, 62, 73, and 82 C. 

 Erbium Chloride in Water. 0.94 normal. 48 mm. depth 



peratures, 7, 17, 29, 46, 60, 70, 80 C. 

 Praseodymium Chloride. 2.56 normal. 3 mm. depth of cell 



tures, 7, 23, 40, 52, 68, 83 C. 

 Praseodymium Chloride. 0.043 normal 



tures, 7, 20, 36, 51, 66, 81 C. 

 Praseodymium Nitrate. 2.6 normal. 



tures, 6, 19, 47, 70, 90 C. 

 Praseodymium Chloride. 2.56 normal. 



tures, 7, 20, 35, 51, 66, 84 C. 

 Praseodymium Nitrate. 2.6 normal. 



6, 16, 34, 46, 58, 70, 82 C. 

 Neodymium Nitrate. 2.15 normal. 



depth of cell. 



of cell. Tem- 

 Tempera- 

 Tempera- 

 Tempera- 

 Tempera- 



4, 17, 29, 43, 58, 71, 84 C. 



196 mm. depth of cell. 



46.5 mm. depth of cell. 



48 mm. depth of cell. 



3 mm. depth of cell. Temperatures, 



3 mm. depth of cell. Temperatures, 



Con- 



Neodymium Chloride in Glycerol. Depth of cell constant, 9 mm. 

 centrations, 0.84, 0.63, 0.42, 0.28, 0.196, and 0.105 normal. 



Neodymium Chloride in Glycerol. Depth of cell constant, 3 mm. Con- 

 centrations, 0.105, 0.143, 0.196, 0.28, 0.42, 0.63, and 0.84 normal. 



Neodymium Chloride in Glycerol. Test for Beer's Law. Depth of cell, 

 3, 4, 6, 9, 13, 18, 24 mm. Concentrations, 0.84, 0.63, 0.42, 0.28, 0.196, 

 0.143, and 0.105 normal. 



Neodymium Chloride in Glycerol. Constant depth of cell, 24 mm. 

 Concentrations, 0.105, 0.143, 0.196, 0.28, 0.42, 0.63, and 0.84 

 normal. 



Neodymium Chloride in Glycerol and Water. Depth of cell, 2.2 mm. Con- 

 centrations of Neodymium Chloride, 0.84, 0.80, 0.76, 0.67, and 0.59 

 normal. Percentages of Water, 0, 5, 10, 20, 30, 60, and 90. 



Neodymium Chloride in Glycerol and Water. Depth of cell, 32.5 mm. 

 Concentrations, 0.59, 0.67, 0.76, 0.80, and 0.84 normal. Percentages 

 of Water, 90, 60, 30, 20, 10, 5, and 0. 



Neodymium Chloride in Water. 3.4 normal. 12 mm. depth of cell. Tem- 

 peratures, 11, 22, 33, 45, 59, 73, and 85 C. 



Neodymium Chloride in Water. 0.17 normal. 196 mm. depth of cell. 

 Temperatures, 5, 16, 28, 42, 59, 72, and 82 C. 



Neodymium Chloride in Water. 3.4 normal. 43 mm. depth of cell. Tem- 

 peratures, 6, 21, 36, 47, 60, 77, and 83 C. 



Neodymium Nitrate in Water. 2.96 normal. 38.5 mm. depth of cell. 

 Temperatures, 7, 17.5, 30, 44.5, 59, 70, and 82 C. 



Neodymium Bromide. 1.66 normal. 6 mm. depth of cell. Temperatures, 

 4.5, 20, 36, 50, 68, and 83 C. 



Neodymium Bromide. 0.055 normal. 197.4 mm. depth of cell. Temper- 

 atures, 5.5, 16.5, 29, 42.5, 55, 68, and 84 C. 



Neodymium and Calcium Chlorides in Water. 2.05 normal Neodymium 

 Chloride added to 4.6 normal Calcium Chloride. Temperatures, 6, 17, 

 31, 49, 63, 74, and 82 C. 



Neodymium Nitrate in Water. 0.036 normal. 197 mm. depth of cell. 

 Temperatures, 9, 22, 42, 56, 69, 78 C. 



Neodymium Acetate to which HN0 3 is added. Depth of cell, 30 mm. 

 Concentration of Neodymium Acetate, 0.041 normal. Concentrations of 

 HN0 3 , 0.117, 0.234, 0.585, 1.17, 4.09, 8.18, and 16.36. 



Neodymium Acetate in Water. Concentration constant, 0.041 normal. 

 Depth of cell, 1, 2, 3, 6, 14, and 34 mm. 



Neodymium Chloride in Glycerol. 0.15 normal. Temperatures, 20, 60, 

 110, 150, 180 C. 



Neodymium Nitrate in Concentrated Nitric Acid. Concentration, 0.4 

 normal. Depth of cell, 0.2, 0.8, 2, 6, 16, and 32 mm. 



