Appendix B continued. 



Table B3. 



Numbers of live mussels and clams taken in 50 

 0.5m samples on transect 6-7 from the fleeted area 

 of the Illinois River at Naples. 



Total Mean per S.D. No. of Percent 

 0.5 m samples occur- 



in which rence 

 species 

 occurred 



Total Mussels 32 0.640 1.241 



Musculium transversum 



Corbicula fluminea 40 0.800 1.443 



51 



17 



17 



34.0 



