346 MORRIS M. WELLS. 



8. Fish resistance is important in certain enclosed bodies of 

 water, and at certain periods of the life cycle (egg and fry stages), 

 but the more important factor in fish distribution and survival 

 is the reaction of the fishes to the environment. 



ACKNOWLEDGMENTS AND BIBLIOGRAPHY. 



I am indebted to Dr. V. E. Shelford for suggestions during 

 the preparation of this paper. 



Anthony, R. 



'08 The Cultivation of the Turbot. Bull. Bur. Fish., Vol. XXVIII., 1908, 



Doc. No. 686, pp. 861-870. 

 Besana, Guiseppe 



'08 American Fishes in Italy. Bull. Bur. Fish., Vol. XXVIII., pp. 847-854, 



Doc. No. 695, 1908. 

 Dannevig, G. M. 



'08 Apparatus and Methods Employed at the Marine Fish Hatchery at Flode- 



vig, Norway. Bull. Bur. Fish., Vol. XXVIII., Doc. No. 680, 1908. 

 Forbes, S. A., and Richardson, R. E. 



'10 The Fishes of Illinois. Natural Hist. Surv. of 111., Vol. III., St. Lab. Nat. Hist. 

 Greene, Chas. W. 



'09 The Migration of Salmon in the Columbia River. Bull. Bur. Fish.. Vol. 



XXIX., Doc. No. 743. 

 Gurley, R. R. 



'02 The Habits of Fishes. Am. Jour. Psychology, Vol. 13, pp. 408-425. 

 Henderson, Lawrence J. 



'13 The Fitness of the Environment. New York. 

 Hill, Leonard, and Flack, Martin 



'10 The Influence of Oxygen Inhalations on Muscular Work. Jour. Physi- 

 ology, London, 1910, No. 5. 

 Jerusalem, R., and Starling, E. H. 



'10 On the Significance of Carbon Dioxide for the Heart Beat. Jour. Physiol., 



Vol. XL., No. 4- 

 Kendall, Wm. C. 



'10 American Catfishes: Habits, Culture, and Commercial Importance. Bur. 



Fish. Doc. No. 733. 

 Kincaid, Walter, S. 



'08 New Methods of Transporting Eggs and Fish. Bull. Bur. Fish., Vol. 



XXVIII., pp. 1037-1039, 1908, Doc. No. 706. 

 Knight, A. P. 



'03 Sawdust and Fish Life. Kingston M. Quart., 1902-3, VII., No. 3. 

 Loeb, Jacques 



'13 The Mechanistic Conception of Life. Chicago. 

 Milner, James W. 



'72 Report of the Fisheries of the Great Lakes. Report of \J. S. F. C. for 

 1872 and 1873, pp. 28-32. 



