42 



Studies on Solution. 



Houstoun has measured two solutions of cobalt nitrate in water. 

 His values are given in table 15, for the sake of comparison. 



The agreement, though poor, is better than the agreement in the 

 case of the cobalt chloride. Plate 19 of the paper by Jones and 

 Anderson shows that A is constant with respect to c for wave-lengths 

 on the red edge of the yellow-green absorption band of an aqueous 

 solution of cobalt nitrate. 



.0900 



.0800. 



.0700 . 



.0100 . 



600 700 800 900 1,000 



FIG. 12. The Absorption Curves for Cobalt Nitrate in Water. 



