Trans. Eoy. Duhl. Soc, 8ei-. II., Vol. VII. 

 23° 



Plate XX. 



33" 



43' 



53° 



73° 



Spectra of saturated aqueous solution of 

 Cobalt Chloride at different temperatures, 

 showing dissociation of the molecules of 

 Water from the Metallic Chloride. 



g D Cfe F 





1. Anhydrous Cobalt Chloride dissolved in 



Alcohol. 



2. Solution of Cobalt Chloride mixed with 



Hydrochloric Acid. 



(Both solutions are unaltered liy lieat.) 



20 



40' 



100 = 



c. 



Spectra at different temperatures of a 

 saturated solution of Cobalt Chloride 

 mixed with a saturated solution of 

 Calcium Chloride. 



