test, except on one or 2 pemels of each series at each location. The 

 deposits generally ranged from traces to light on the panels of the control 

 series and from traces to light, or rarely moderate, oh the panels of 

 the test series. 



2. Algae . Algae occurred on 2 test panels at the Timber 

 Wharf, on a single control panel and k test panels at the "1010 

 Wharf", and on a single control panel and 3 test panels at the 

 HE Wharf. The algae vere mostly green, hut "brown and red ones also 

 occurred. The growths were mostly traces or occasionally light. 



3'. Invertebrate nnlwnl phyla . 



a. Porifera (sponges ). One colony of sponges was recorded 

 on one test panel and three colonies on another panel at the Fuel Oil 

 Pier. 



"b. Coelenterata (hydroids ). Bydrolds occurred with great 

 frequency on the panels at all four locations. They were on 36 of the 

 kl control panels and ^1 of the k8 test panels at the Tlmher Pier, on 

 31 of the kl control panels and 39 of the k8 test panels at the "1010 

 Wharf", on 22 of the kl control panels and 38 of the ^8 test panels at 

 the HE Wharf, and on 25 of the kl control panels and kl of the k8 test 

 panels at the Fuel Oil Pier. The growths mostly rated as traces on the 

 panels of the control series and as traces or occasionally light on 

 the panels of the test series. Tuhularia was the only form identified. 



c. Bryozoa (enorustlng and filamentous ). Encrusting Bryozoa 

 occurred abundantly at one location "but were almost lacking at the 

 other locations. At the Timber Wharf, they occurred on 15 of the kl 

 control panels and on 27 of th6 k8 test panels. Five of the test panels 

 were 40^, 50^, 60^, and 75?^ covered, respectively. Their only occurrence 

 at the other locations was on single panels of both the control emd test 

 series at the "1010 Wharf" and on a single control panel at the HE 

 Wharf. None was identified. Filamentous Bryozoa .occurred more or less 

 abundantly at all four locations. They were manifest on 12 of the kl 

 control panels and on 17 of the k8 test panels at the Timber Wharf, 



on 33 of the kl control panels and 39 of the k8 test panels at the 

 "1010 Wharf", on 9 of the kl control panels and 25 of the k8 test 

 panels at the HE Wharf, and on 11 of the ^t-l control panels and 2k of the 

 ii-8 test panels at the Fuel Oil Pier. One of the test panels at the 

 DE Wharf was 10^ covered, and one test panel at the Fuel Oil Pier was 

 5S^ covered. Bugula flabellata » B. neritina, and B. sp. were identified. 



d. Annelida (annelid worms ). Serpulid ( Serpula ) tubes 

 occurred with great frequency and abundance on the panels at all locations. 



230 



