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 Clark, F. N. 



'10 A Plan for Promoting the Whitefish Production of the Great Lakes. Bull. 



Bureau Fish.. Vol. XXVIII., 1908. pp. 637-642. 

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'05 Research Methods in Ecology. Lincoln, Nebr. 

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'08 The Toxic Properties of Bog Water and Bog Soil. Botanical Gazette. 



Vol. 46. p. 130. 

 Eycleshymer, A. G. 



'01 Observations on the Breeding Habits of Ameiurus nebulosus. Am. Nat.. 



Vol. XXXV., pp. 911-18. 

 Forbes, S. A. 



'78 The Food of Illinois Fishes. Bull. 111. State Lab. Nat. Hist.. Bull. no. 2, 



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'83 The Food of tin- Smaller Freshwater Fishes. L. c.. Bull. no. 6, pp. 65-94. 

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'08 The Fishes of Illinois. Nat. Hist. Stirv. of 111.. Ichthyology. Vol. III. 

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'04 A Remarkable Genus of Fishes, the Umbras. Smithsonian Misc. Coll., 



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 Hankinson, T. L. 



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"94 Lampreys and Fishes of Indiana. Inch Dept. of Geol. and Nat. Resources 



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"81 Book of the Black Bass, Cincinnati. Clarke. 

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'02 The Home Life of Wild Birds; a New Method of the Study of Photography 



of Birds, New York. 

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'08 Dissolved Oxygen as a Factor in the Distribution of Fishes. \Yi< Ac. Sr. 



Arts and Lett., Vol. XVI.. pt. i. 

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'08 Conditions of Life in the Sea. Cambridge I'niv. Press. 



