HEMATOSIN. 



Albumen. Hematosin. 



Insoluble in alcohol and acetic ether, Very soluble in alcohol and acetic 



amrnoniated or mixed with sulphuric, ether ammoniared or mixed with sul- 



muriatic, or acetic acids. phuric, muriatic, or acetic acid. 



Soluble in acetic acid, and in weak Insoluble in acetic, muriatic, and 

 muriatic and sulphuric acids, when as- sulphuric acids, whether weak or con- 

 sisted by heat. centrated. 



Lecanu examined hematosin from human blood, and from 

 that of the ox, domestic fowl, duck, frog, carp, and mackerel, 

 and found it in all cases possessed of the very same properties. 

 The only difference observed was in the proportion of peroxide 

 of iron left when the hematosin was incinerated. Human hema- 

 tosin left 10 per cent., that of the ox left 12-76 per cent., while 

 that of the domestic fowl left 8 '34 percent 



It seems not unlikely that the yellow, blue, and brown colour- 

 ing matters obtained by M. Sansen from blood, were hematosin 

 altered by the processes to which he had subjected it. His red 

 colouring matter evidently contained albumen.* 



Hematosin was subjected to an ultimate analysis by Mulder, 

 by means of oxide of copper, f He obtained from the hematosin 

 taken from the arterial blood of oxen and sheep, 



Carbon, . 64-57 



Hydrogen, . 5-25 



Azote, . 10-54 



Iron, . 6*67 



Oxygen, . 12-97 



100-00 



If we suppose the iron to amount to one atom, the constituents 

 of hematosin will be, 



43 atoms carbon, = 32-25 or per cent 64-89 



21 atoms hydrogen, = 2-625 ... 5-29 



3 atoms azote, = 5-25 ... 10-70 



1 atom iron, =3-50 ... 7-03 



6 atoms oxygen, 603 ... 12-09 



49-625 100-00 



Mulder, to ascertain the atomic weight of hematosin, dried it 

 at the temperature of 266, and passed a current of chlorine gas 

 over it till it refused to absorb any more. Nothing whatever 



* Jour de Pharmacie, xxi. 420. f Annalen de Pharm. xxx'u 134. 



