^76 E. Nixvton Han^ey 



at the surface resulting from ionic interchange accompanying 

 increased permeabiHtv after membrane formation. 



6 That an increase of surface tension, which must accom- 

 pany a change of potential at the surface, is quite general in 

 naked eggs after fertilization, as indicated by their rounding up 

 when previously the\ had been irregular in outline. 



