296 



Dr. Harry. Yes ; we have been doing this fairly regularly. 



We have only determined this last year. The first time this problem 

 came up was last year so there is no' a big backlog of data. Nobody 

 knew there was a problem until we decided maybe this is something 

 we had better analyze, and we analyzed the fur seals for mercury, 

 and they had a considerable amount especially concentra'ed in the 

 liver. 



And this is the first indication of such a thing in this mammal. 



Mr. DiNGELL. How about the heavy metals, generally ? 



Dr. Harry. Cadmium has shown up in a pre'ty good charge. DDT 

 and other pesticides are there. 



Mr. DiNGELL. AVould you submit us information on this point ? 



Dr. Harry. Yes. 



(The infonnation follows :) 



