Table 1 . --Approach to complete equilibrium between two sea waters 

 separated by a piece of skin of the little tunny The water 

 outside the skin contained radioactive strontium, cesium, 

 or ruthenium. 



(Averages of tests at different specific activities) 



Table 2 . --Relative radioactivity of tissues beneath the skin of little tunny 



following contact of the skin with sea water solutions of strontium -89. 

 Activity of skin surface as 100 . 



(Average of duplicate tests in 3 series of experiments) 



94419 



