At the Woody Island Pier, It rated slight in I9U5, 19^6, and I9U7. At 

 the Army Base, it never rated more than the trace recorded in 19'^5. 



h. Fouliiig Qrp^anisma . Silt, algae, and Invert ehr ate 

 animals belonging to 6 phyla oontrihuted to fouling of the panels. The 

 latter included hydroids, encrusting and filamentous Bryozoa, serpulid 

 worms, harnacles, miscellaneous nonhoring mollusks, and tunicates. Of 

 these organisms, hydroids and liarnacles occurred with the greatest fre-, 

 quency hy far, encrusting Bryozoa with less frequency, and serpulid worms 

 with still less frequency, while the occurrence of the other worms was 

 merely sporadic or occasional. Algae occurred frequently on the panels at 

 the Woody Island Pier, hut very rarely on the panels at the other locations. 



3. Recent Addenda . There was no test hoard operated in 1914-8 at 

 the Temporary Pier in Womens Bay. A new hoard, operated during 19^9> 

 registered a trace of Teredinidae and a medium heavy attack of Limnoria . 

 At the Permanent Pier, there was a moderate attack hy Teredinidae in 19^8 

 hut none whatever in 19^9. Limnoria was rated &b low slight in 19^8 and 

 as a trace in I9U9 at this location. Teredinidae rated slight in I9U8 

 and a trace in 19^9 at the Marine Railway, where Limnoria was recorded as 

 slight in the former year and as moderate in the latter. The test hoard at 

 Woody Island Pier waB discontinued after 19^8, during which year it showed 

 a trace of Teredinidae and a slight attack of Limnoria . No hoard was 

 operated at the Army Pier during either year. 



151 



