Dec. 15, 1914 



Coloring Matter of Salted Meats 



215 



Fig. I. — Spectra of hemoglobin aod some of its derivatives: A , absorption spectrum of a solution of oxyhe- 

 moglobin ;B, absorption spectrum of a solution of NO-hemoglobin; C. absorption spectrum of a solution 

 of hemoglobin prepared by treating a solution of oxyhemoglobin with hydrazin hydrate; D, absorption 

 spectrum of a solution of methemoglobin prepared by treating a solution of oxyhemoglobin with potassium 

 fcrricyanid; E, absorption spectrum of an alkaline solution of hematin; F. absorption spectrum of a solu- 

 tion of hcmochromogen prepared by treating an alkaline solution of hematia with hydrazin hydrate; 

 G, absorption spectrum of a solution of NO-hemochromogcn. 



