2. Test Beeults . 



a. Borers. Teredlnldae were very active and extremely atiindant 

 throughout the period covered by the test, the "breeding season "being continu- 

 ous. The attack was extremely severe each year. Llmnorla also were active 

 throughout the period covered "by the test and occurred In every calendar 

 month of the year, "but never In particularly destructive ntunbers. The 

 attack rated slight In 19l<-5 and 19^6, with a peak low In the moderate 

 rating in 19^7. Fholadldae likewise were more or less active throughout 

 much of the period covered "by the test, the attack rating heavy in 19^^ 

 and 19^6 and medium heavy In 19^5 and 19^7. 



"b. Fouling Organisms . Silt, algae, and Inverte'brate eLnimals 

 "belonging to 7 phyla contrl"buted to fouling of the panels. The latter 

 Included sponges, hydroids, encrusting and filamentous Bryozoa, serpulid 

 worms, "barnacles, mlscellaneoxis non"borlng mollusks, and tunlcates. Of 

 these organisms, hydroids, marine worms, "barnacles, and J ingle- shells 

 occurred with great frequency, while the occurrence of the other forms, 

 as well as the algae, was merely sporadic or occasional. 



5. Recent Addenda . The attack by Teredlnldae was very heavy at 

 this station in both 19it-8 and 19i<-9, while the Llmnorla attack was rated 

 as slight in both these years. 



Ill 



