There was no attack at any location In 19^5> and only a single specimen 

 ■was recorded at the Barge Pier in 19^6. In 19^7* the attacks rated 

 moderate at the Barge Pier £ind Wharf No . 2 hut only very slight at 

 Wharf No. 5. The only evidence of L1 Timor ia at any of the three locations 

 ^*as a ^single tunnel found in a test panel at Vharf No. 2 and 5 tunnels 

 found in a test panel at Wharf No. 5. 



b. Fouling Organisms . Silt, algae, and invertebrate 

 animals belonging to ij- phyla contributed to fouling of the panels. 

 The latter comprised hydroids and Jfetridium; encrusting and filamentous 

 Bryozoa; barnacles, amphipods and isopods; and mussels. Of these 

 organisms, hydroids and barnacles occurred with great frequency, the 

 latter in unusual abundance; mussels occurred rather infrequently; 

 while the occun'ence of the others, as well as the algae, was purely 

 sporadic or occasional. 



3. Recent Addenda . There were no Teredlnldae whatever at the 

 Barge Pier during 19^^ and 19^9. Limnoria also were absent. At Wharf 

 No. 2, there was no change in the conditions already reported above. 

 No Teredinidae appeared on the test or control panels at Wharf No. 5 

 in 19^8, and the damage from a set in 19^9 rated only a trace. There 

 have been no Limnoria at this location since 19^6. 



192 



