"b. Fouling Oraanismfl . Silt and inYertelsrate animals "belonging 

 to 5 phyla contributed to the fouling of the panels. The latter included 

 hydroidB, encrusting and filamentous Bryozoa, serpulid worms, 'barnacles, eind 

 tvuiicates. Of these organisms, hydroids occurred with the greatest frequency; 

 encrusting and filamentous Bryozoa, serpulid worms, and 'bamacles occurred 

 with somewhat less frequency; the occurrence of the tunicates was sporadic. 



The operation of the test "board was not continued long enough to 

 provide conclusive information as to the development and prevalence of marine 

 "borers and fouling organisms at this location, "but it does show the general 

 trend. 



155 



