Appendix B continued. 



Table B5 



Numbers of live mussels and clams Taken in 49 

 0.5m samples on transect 10-9 from the fleeted area 

 of the Illinois River at Naples. 



Total Mean per S.D. 

 0.5 nT 



No. of Percent 

 Samples occur- 

 in which rence 

 species 

 occurred 



Fusconaia flava 



Unidentified 



0.061 



0.242 



6.1 



0.102 



0.306 



10.2 



Total Mussels 

 Musculium transversum 

 Corbicula fluminea 



53 



