At the Timber Wharf, they showed up on 28 of the Ij-l control panels 

 and on 58 of the k8 test panels. One of the test panels was 10^ covered. 

 At the "1010 Wharf", they were on 39 of the 4l control panels and on 

 all kS test panels. Serenteen of the control panels were from 20^ to 

 100^ covered, and 18 of the test panels were from 20^ to 100?& covered. 

 At the IE Wharf, they occurred on 58 of the kl control panels emd on 

 k^ of the kd test panels. Five of the control panels were from 15^ 

 to 50^ covered, and 5 of the test panels were from 50?^ to 75^ covered. 

 At the Fuel Oil Pier, there were serpulid tutes on 57 of the kl control 

 panels and on 45 of the k8 test panels. Eleven of the control panels 

 were from 205^ to 100^ covered, and 5 of the test panels were from 

 55^ to ^^ covered. 



e. Arthropoda (crustaceans ). Balanus ("barnacles) also 

 occurred with great frequency and in great ahundance on the panels at 

 all four locations. At the Timher Wharf, they occurred on 50 of the kl 

 control panels and on 45 of the 48 test panels. Four of the control 

 panels were from 20^ to 4o^ covered, and 17 of the test panels were 

 from 20^ to 100?& covered. At the "1010 Wharf", they were on 56 of the 

 kl control panels and on kk of the 48 test panels. Twelve of the 

 control panels were from 10^ to 100^ covered and 20 of the test panels 

 were from 20^ to 90^ covered. At the EE Wharf, heirnacles appeared on 

 52 of the 4l control panels and on 47 of the 48 test panels. Five of 

 the control panels were from 15^ to 50^ covered, and 29 of the test 

 panels were from 10^ to 100^ covered. At the Fuel Oil Pier, they occurred 

 on 50 of the 4l control panels and on 46 of the 48 test panels. Seventeen 

 panels of both series were from 25^ to 100^ covered. On the control 

 panels, maximinn diameters of 9, l4, 18, and 12 mm were recorded for the 

 respective locations in the order in which they are listed, while on 



the test panels, maximum diameters of 25, 19^ 25, and 22 mm were recorded 

 in 8, 4, 8, and 4 months, respectively. Corophiioa tuhes up to 25 mm 

 long occurred on the first panel in "both the control ajid test series, 

 there "being approximately 200 tuhes on each. 



f. Mollusca (nonhoring mollusks ). Anomia (jingle-shells) 

 aJ-BO occurred with considerahle frequency on the panels at all four 

 locations, although the numher on any panel was generally few, and it 

 exceeded 46 only twice. At the Timber Wharf, they showed up on l4 of 

 the 4l control pajiels and on 15 of the 48 test panels. At the "1010 

 Wharf", they were on 25 of the 4l control panels and on 38 of the 48 

 test panels. One of the control panels was 60^ encrusted. At the 



HE Wharf, they appeared on 17 of the 4l control panels and on 37 of the 

 48 test panels. At the Fuel Oil Pier, they occurred on 21 of the 4l 

 control panels and on 40 of the 48 test panels. Ostrea (oysters) 

 occurred in small nunfbers on occasional test panels at all locatit)ns. 

 They were on six at the Timber Wharf, on seven at the "1010 VTharf", 

 on five at the DE Wharf, and on seven at the Fuel Oil Pier. Maximum 

 diameters of 18, 45, 20, and 50 ram were recorded in 5, 8, 7 f and 4 

 months, respectively. 



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