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Fig. 72 . Spectra of ( 1 ) Oxyhaemoglobin ; ( 2 ) Haemoglobin ; 
( 3 ) Alkaline Methaemoglobin; ( 4 ) Methaemoglobin in 
Neutral or Acid Solution ; ( 5 ) Alkaline Haematin ; 
(6) Reduced Haematin ( Haemachromogeri ) ; 
( 7 ) Urobilin; ( 8 ) Zinc-Urobilin 
