Analyses of the panels continued as described by Maloney (1958), 

 except for the development of new data sheets that aided in standardiz- 

 ing procedures. Strip templates of 1/10 square foot were used where 

 fouling was severe, and transparent templates marked in squares one 

 centimeter on the side increased accuracy and greatly facilitated 

 calculation of area coverage data. 



In the usual procedure, panels were weighed in water and in air 

 both before and after the immersion period. Black and white photo- 

 graphs were made of both convex and concave sides of each panel 

 immediately after removal from water and again after drying. It was 

 necessary to make most analyses in the dry state with photographs 

 of the fresh state for comparison; however, some panels were examined 

 while fresh. Salinity samples, temperatures, Secchi disc readings, 

 currents, and general meteorological data were collected at each 

 introduction and recovery of a pa*nel or other fouling test object. 



III. ENVIRONMENT 



Maloney (1958) questioned whether the 1956-57 Site 1 period 

 was typical for both environmental factors and biological activity. 

 Representative temperatures derived from the 1956-58 Site 1 and 

 1957-59 Site 2 data shown in Figure 8 are in relatively close agree- 

 ment with the 10 years of mean surface temperature data for Old 

 Point Comfort. Salinity comparison indicates that representative 

 salinities are in closer agreement with the mean maximum than with 

 mean salinities for Old Point Comfort. The close relationship between 

 biological activity and water temperature would indicate that the 

 yearly periods involved in this program are basically typical biological 

 periods for the area. The lack of agreement in salinity does not 

 necessarily detract from the possibility of relatively typical biological 

 periods, since mean annual salinity in an estuarine environment is a 

 poor indicator of fouling activity and the local salinity, pollution, and 

 silting inter-relationship's create a complicated biological activity 

 situation specific to the area. 



