606 



COLLOIDAL BEHAVIOR OF EDESTIN 



TABLE n. 



Ejffect oj Sodium Sulfate on the p,h. and Osmotic Pressure oj 0.45 Per Cent Edestin 



Chloride at pH 3. 



Concentration of Na!S04. 



pH inside 



pH outside 



Observed p.d., millivolts 

 Calculated p.d., millivolts 

 Observed osmotic pres- 

 sure, mm 



3.00 

 2.69 

 19.0 

 18.0 



204 



TABLE III. 



EJfect of Sodium Chloride on the p.h. and Osmotic Pressure of 0.45 Per Cent Edestin 



Chloride at pH 3. 



Concentration of NaCl. 



pH inside 



pH outside 



Observed p.d., millivolts . . 

 Calculated p.d., millivolts . 

 Observed osmotic pres- 

 sure, mm 



3.00 

 2.70 

 17.5 

 17.5 



201 



TABLE IV. 



Eject of Calcium Chloride on the p.h. and Osmotic Pressure of 0.45 Per Cent 



Edestin Chloride at pH 3. 



Concentration of CaCh. 



pH inside 



pH outside 



Observed p.d., millivolts . 

 Calculated p.d., millivolts 

 Observed osmotic pres- 

 sure, mm 



3.02 

 2.70 

 15.5 

 18.5 



205 



