886 INDEX TO SPECTRUM PLATE. 



SPECTRUM PLATE. 



1. Absorption spectrum of a solution of oxyhcemoglobin. 



2. Absorption spectrum of a solution of haemoglobin, obtained by the action of an 



ammoniacal ferro-tartrate solution on an oxyhaemoglobin solution. 



3. Absorption spectrum of a faintly alkaline solution of methcemoglobin. 



4. Absorption spectrum of a solution of hcematin in ether containing oxalic acid. 



5. Absorption spectrum of an alkaline solution of hcematin. 



6. Absorption spectrum of an alkaline solution of hcemochromogen, obtained by the 



action of an ammoniacal ferro-tartrate solution on an alkaline-hsematin solution. 



7 Absorption spectrum of an acid solution of urobilin. 



8. Absorption spectrum of an alkaline solution of urobilin after the addition of a zinc- 

 chloride solution. 



9 Absorption spectrum of a solution of lutein (ethereal extract of the egg-yolk). 



