c£, of DB/KYD 



tL, ,(% saturation) 

 MODE 1-2-1 



120 % SATURATION 



Figure 2 6. Total attenuation coeffi- 

 cient for mode 1-2-1 vs. per cent of 

 saturation with oxygen (no correction 

 made for cavity attenuation). 



cU„, DB/KYD 



a zo/ (gonyaulax) 



MODE 1-2-1 



100 150 NUMBER/ML 



20 NUMBER COUNTED 



Figure 2 7. Total attenuation coeffi- 

 cient for mode 1-2-1 vs. concentration 

 of Gonyaulax. 



83 



