State of Illinois 



DEPARTMENT OF REGISTRATION AND EDUCATION 



Francis W. Shepardson, Director 



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Division of the 

 Natural History Survey 



THE FISHES OF ILLINOIS 



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STEPHEN ALFRED FORBES, Ph.D., LL.D. 



AND 



ROBERT EARL RICHARDSON, A.M. 







SECOND EDITION, 1920 



PUBLISHED BY 



AUTHORITY OP THE STATE OF ILLINOIS 







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