nickel, and percent silt and most positively correlated with Fossil Fuel Relative Index 

 (FFRI). Among the S. purpuratus end-points measured in only five samples, the end-points of 

 micronuclei incidence, anaphase aberrations, mitoses per embryo, and fertilization success 

 were relatively highly correlated with one or more classes of organic compounds. In 

 addition, anaphase aberrations were relatively highly correlated with several trace 

 metals. Since the sample sizes for these end-points were relatively small, the apparent 

 correlations between the concentrations of PAHs and the incidences of anaphase aberrations 

 and micronuclei are illustrated graphically in Figures 2 and 3. 



48 



