590 



REVERSAL OF SIGN OF CHARGE 



of the blood except those contained in the red corpuscles. After 

 repeating this process five or more times the corpuscles were laked by 

 adding four times their volume of distilled water. Newly prepared 



Collodion membrane treated with oYyhemoglobin 



120 

 80 

 40 



isoelectric 

 point 6.75 



Fig. 

 charge 





6. Collodion membranes treated with oxyhemoglobin. Reversal of sign of 

 at pH of about 6.0, on the acid side of the isoelectric point of oxyhemoglobin. 



