THE PERMEABILITY OF FROG SKIN TO URKA. 



255 



4/27/26. 



TABLE X. 



Isotonic Sucrose 

 Solution. 

 Mg. Urea. 

 Living skins: 



" Normal" direction 1.74 



i. ii 

 Killed in alcohol: 



" Normal" direction 19-83 



"Turned" 17-49 



Killed in NaF: 



"Normal" direction 5.82 



"Turned" 6.45 



Ringer's 

 Solution. 

 Mg. Urea. 



2.07 

 1.98 



12.63 



11.58 



5-04 

 4-95 



5/12/26. 



TABLE XI. 



Isotonic Dextrose 

 Solution. 

 Mg. Urea. 

 Living skins: 



"Turned" 4-5 



Killed in NaF: 



"Normal" direction 4.32 



"Turned" 3-84 



Killed in formalin: 



"Normal" direction 7.56 



"Turned" 8.16 



Killed in alcohol: 



"Normal" direction 24.48 



"Turned"., 26.82 



Ringer's 

 Solution. 

 Mg. Urea. 



7-32 



1.98 

 3-78 



7-74 

 6.84 



18.48 

 21.78 



5/18/26. 



TABLE XII. 



Isotonic Dextrose 

 Solution. 

 Mg. Urea. 

 Living skins: 



"Normal" direction 3-54 



Killed in NaF: 



"Normal" direction 12.74 



"Turned" 



Killed in formalin: 



"Normal" direction 3-48 



"Turned" 3-9 



Killed in alcohol: 



" Normal" direction i4-?6 



"Turned". , 18.72 



Ringer's 

 Solution. 

 Mg. Urea. 



5.16 



10.08 

 3-84 



3.00 

 5-46 



14-76 

 15-30 



