Absorption Spectra, 



Reduced Alkali 

 Haematin or 

 Haemochromoget 



Acid Haematin hi 

 ethereal solution. 



14 



Acid Haemato- 

 porphyrin. 



Alkaline 



Haematopor- 

 phyrin. 



Urobilin or Hydrc 

 bilirubin in acid 

 solution. 



Urobilin or Hydrc 

 bilirubin in alkaiii 

 solution after the 

 addition of zinc 

 chloride solution. 



Bilicyanin or 

 Cholecyanin in 

 alkaline solution. 



