2. Test Besults . 



a. Borers . Teredlnldae occurred in destructive numbers 

 and the maximum severity of attack was rated as very heavy. The breeding 

 season extends from Septeniber to at least December, and probaljly longer. 

 No Limnoria or other crustacean horers and no Pholadidae occurred in 

 any of the panels. 



"b. Fouling Organisms . Silt and invertel)rate animals belonging 

 to 5 phyla contrihuted to fouling of the panels. The latter comprised 

 hydroids, encrusting and filamentous Bryozoa, serpulid worms, "beimacles, 

 and mussels. The hydroids and tarnacles occurred most frequently, 

 the encrusting Bryozoa occurred less frequently, while the occurrence 

 of the others was purely sporadic or occaeional. 



The operation of the test hoard was not continued long enough 

 to provide conclusive information on the breeding hahits and development 

 of marine "borers and fouling organisms at this location, "but the test 

 does show the general trend. 



258 



