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determined function of the ratio of maximum to minimum radius 

 during the oscillatory response. For each species of fish the 

 effective bubble radius for the calculations is determined thru 

 correlating the observed injuries with the calculated radius 

 ratio. 



The method was used to satisfactorily describe dissection 

 results from 1500 Spot and White Perch caged at depths from 5 to 

 100 feet and subjected to pentolite explosions of from 1 to 70 

 lbs submerged at depths ranging from 5 to 70 feet. An approxi- 

 mate method for calculating the pressure signature from an 

 underwater explosion subject to surface effects - including 

 cavitation - is given in an appendix. 



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