108 



DESCRIPTION OF PLATES. 



Plate 52. .4. 



B. 



Plate 56. A. 



B. 



Plat j : 60. 



B. 



A. 

 B. 



C. 



10 and 70 C. 



unci Hydrochloric Acid at 10 c 



and 



Neodymium Chloride in Water (S per cent) and Ethyl Alcohol. Concentra- 

 tion, 0.3. Depth of cell, 1.0 cm. The exposures were started at 40 and 

 ended at 80 C, the temperature being gradually increased in the interim. 



Neodymium Chloride in Water and Alcohol. Concentration, 0.1 normal. 

 Depth of cell, 1.0 cm. Range of temperature, starting from lowest 

 strip, 20 to 85 C. 



Neodymium Chloride in Methyl Alcohol. Concentration, 0.2 normal. 

 Depth of cell, 1.0 cm. Temperatures, 25, 40, 55, and 70 C. 



Uranous Chloride in Water. Range of temperature from 30 to about 80 C. 



Neodymium Bromide in Water (8 per cent) and Methyl Alcohol. Concentra- 

 tion, 0.2 normal. Range of temperature, 30 to 80 C. 



Neodymium Chloride in Methyl Alcohol. Concentration, 0.1 normal. 

 Depth of cell, 10 cm. Temperatures, 26, 40, 55, 78, and 85 C. 



Neodymium Bromide in Methyl Alcohol. Concentration, 0.1 normal. 

 Depth of cell, 10 cm. Temperatures, 25, 35, 44, 60, 82, 100, and 

 120 C. At the highest temperature a precipitate was formed. 



Neodymium Bromide in Water. Concentration, 1.66 normal. Depth of 

 cell, 1.0 cm. Temperatures, 20, 40, 60, 80, and 93 C. 



Neodymium Chloride in Water. Concentration, 2.05 normal. Depth of 

 cell, 1.0 cm. Temperatures, 20, 50, and 75 C. 



Neodymium Nitrate in Water. Concentration, 2.15 normal. Depth of 

 cell, 1.0 cm. Temperatures, 20, 75, and 95 C. 



Neodymium Chloride in Acetone, 10 and 70 C. 



Neodymium Chloride in Ether, 10 C. 



Neodymium Chloride in Ethyl Alcohol, 



Neodymium Chloride in Ethyl Alcohol 

 70 C. 



Neodymium Nitrate in Nitric Acid, 10 



Neodymium Chloride in Water (8 per 

 and 70 C. 



Neodymium Nitrate in Water (8 per cent) and Acetone at 10 and 60 C. 



Neodymium Chloride in Water (40 per cent) and Ethyl Alcohol at 10 C. 



Neodymium Chloride in Water (40 per cent) and Glycerol at 10 C. 



Neodymium Nitrate in Water and Methyl Alcohol. Concentration, 0.25 

 normal. The variable here is the percentage of water. 



Neodymium Bromide in Water (8 per cent) and Methyl Alcohol. Concen- 

 tration, 0.2 normal. Depth of cell, 1.0 cm. Temperature range, 25 to 

 115 C. 



Neodymium Nitrate in Water (14 per cent) and Methyl Alcohol. Concen- 

 tration, 0.3 normal. Depth of cell, 1.0 cm. Temperature range, 25 

 to 115 C. 



Neodymium Bromide in Water (8 per cent) and Ethyl Alcohol. Concentra- 

 tion, 0.2 normal. Depth of cell, 1.0 cm. Temperature range, 25 to 

 87 C. 



Neodymium Chloride in Water at 10 and 90 C. 



Neodymium Chloride in Hydrochloric Acid at 10 and 90 C. 



Neodymium Chloride in Methyl Alcohol. 



Neodymium Chloride and Sodium Chlorate in Methyl Alcohol. 



Neodymium Acetate in Water at 10 and 90 C. 



Neodymium Chloride in Acetic Acid at 10 and 90 C. 



Neodymium Acetate in Acetic Acid at 10 and 90 C. 



Neodymium Acetate in Methyl Ester and Acetic Acid at 10 and 90 C. 



Erbium Chloride in Water at 20, 30, 85, and 115 C. 



Neodymium Chloride in Water. Concentration, 0.2 normal. Depth of 

 cell, 10 cm. Temperatures, 20, 50, So, and 115 C. 



Neodymium Nitrate in Tertiary Butyl Alcohol. Concentration, 0.2 normal. 

 Deptli of cell, 1.0 cm. Temperatures, 25, 50, and 65 C. 



Neodymium Nitrate in Isobutyl Alcohol at 20, 75, and 100 C. 



and 50 C. 



cent) and Methyl Alcohol at 10 



