serpulld worma. Of these organisms, hydroids occurred most frequently, 

 filamentous Bryozoa occurred leas frequently, and encrusting Bryozoa 

 and serpulid worms occurred still less frequently. 



The operation of the test board was not continued long enough 

 to provide conclusive information on the "breeding habits and develop- 

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

 the results obtained show the general trend. 



255 



