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Part IVs Observations on sbimd production and response in tuna„ , 59 



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Response of tuna to sound stimuli ooooooo^ooooxooooooooooooo 63 



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Part 1% Notes on the response of a tropical fish ( Kuhlia 



san dvicensis ) to interrupted direct currento o « ., o = . » o » » o « . o 69 



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Source voltage and electrode size 000. ...0000000000000000000 70 



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81 

 83 



