54 CHARLES F. W. MCCLURE 



established and continued in the manner suggested. One im- 

 portant question still remains to be determined whether the 

 rate of passage through the skin, as observed in the experi- 

 ments, is consistent with that which actually prevails in the 

 living animal. Be this as it may, the significance of these 

 observations cannot be disregarded in an attempt to account 

 for the establishment and the continuance of a flow of fluids 

 between the blood capillaries and the lymphatics, and for 

 variations in the rate of flow, due to differences in potenti- 

 ality which actually exist on opposite surfaces of the skin in 

 the living animal. 



