Finger Pier No. 21, aiid on 2k of the 55 control panels and 51 of the 

 52 test panels at the HiaTal Ammunition Depot Pier. The growths generally 

 rated as traces or rarely moderate on the panels of the control 

 series and from traces to moderate on the panels of the test series. 

 Tubtilaria occurred at all locations, and Pennaria sp. vas identified 

 at the Ifeival Ammunition Depot Pier. 



"b. Bryozoa (encrusting and filamentous ). Encrusting Bryozoa 

 occurred more or less ahundantly on the panels at all locations. They 

 were on 2 of the 57 control panels axid 15 of the 58 test panels at 

 Shipbuilding Ways No. 8, on li- of the 52 control panels and 8 of the 

 same nuniber of test panels at Finger Pier No. 21, and on a single on© 

 of the 55 control panels and 15 of the 52 test panels at the Naral 

 Ammunition Depot Pier. Eleotra sp. was the only form identified, and 

 this form occurred at all three locations. On© of the test panels at 

 Shipbuilding Way6 No. 8 was 50^ covered and one test panel at the 

 Naval Ammunition Depot Pier was 25^ covered. A trace of a filamentous 

 Bryozoan ( Bugula sp.) occurred on a single control panel at the Naval 

 AnjmuMtiojp; Depot Pier. 



c. Arthropoda (orastaceans ). Balanms (beu:Tiaoles ) occurred 

 with great frequency and ahmidance on the panels at all three locations. 

 They were on 25 of the 57 control panels and all 58 of the test panels 

 at Shipbuilding Ways No. 8, on 20 of the 52 control panels and 27 of 

 ■ttie same number of test panels at Finger Pier No. 21, and on 25 of the 

 35 control panels and 29 of the 52 test panels at the Naval Ammunition 

 Depot Pier. On the control panels, maximum diameters of 9* 8, and 



8 mm were recorded for the locations in the above order, while on 

 the test panels, mBTlnnm diameters of I8, 12, and Id mm were attained 

 in 8, kf and 8 months, respectively. At Shipbuilding Ways No. 8, 

 20 of the control panels were k<yf) to 100^ covered, and all 58 of the 

 test panels were 20?^ to 100^ covered. At Finger Pier Ho. 21, 15 of 

 the control panels were 50^ "to 90?^ covered, and 25 of the test panels 

 were 5^ to lOQ^i covered. At the Naval Ammunition Depot Pier, 18 of the 

 control panels were kO^ to 100^ covered, and 21 of the test panels were 

 50^ to 1005^ covered. Corophium occurred on a single test panel at 

 Shipbuilding Ways No. 8, on k of the test panels at Finger Pier No. 21, 

 and on 5 of the test panels at the Naval Ammunition Depot Pier, the 

 largest number appearing on any pamel being 100 forms. Other amphipods 

 occurred on 5 of the test panels at both Finger Pier No. 21 and the Naval 

 Ammunition Depot Pier. 



d. MolluBca (nonboring mollusks ). ^^iluB (mussels) 

 occurred on 20 of the 58 test panels at Shipbuilding Ways No. 8, on 



2 of the control panels and 15 of the test panels at Finger Pier No. 21, 

 and on 7 of the control panels and 25 of the test panels at the Naval 

 Ammunition Depot Pier. A maximum length of 17 mm was recorded on the 



180 



