"b. Foiaiiig Qrganlsma . Silt, algae, and inverte"brate animalB 

 ■belonging to 6 phyla contributed to foullog of the panels. The latter 

 coiig)rised hydroids and Metridiimi , encrusting Bryozoa, serpulid vottob, 

 "barnacles and anrphipods, nonl^oring inollusks> and tunicates. Of these 

 "borers, hydroids and "barnacles occurred with the greatest frequency; 

 Metridium , encrusting Bryozoa, and sejrpulid worms occurred with less 

 freq.uencyj while the occurrence of the others, as well as the algae, was 

 merely sporadic or occasional. 



5, Becent Addenda . The Teredinidae attact was rated as slight in 

 19hQ and very heavy in 19^9, at the first location. There were no 

 Limnoria recorded at this locaticn either year. At location No. 2, the 

 Teredinidae attack registered heavy in 19l^8 and very heavy in 19^9. There 

 were no Llmaoria at the second location in 19l»8 and only a trace in 19k9. 



69 



