Stiles and jargensen.—Studies in Permeability. /. 355 
It will be observed that osmotic pressure alone cannot account for the 
result, as from this point of view the greatest exosmosis would be expected 
in the case of the weakest solution. 
It seems in this case definite enough, that the greater the number of 
poisonous ions in the solution, the more rapid the exosmosis, or, put in 
other words, the more rapidly the plasma membrane is rendered more 
permeable. 
