320 APPENDIX. 



General Natural History. 



22. Birds of the Northwest, Coues; 1874. 



23. Faunal List and Natural Food of t^e Birds of Nebraska, by S. A. ; 1877. 



24. Report of U. S. Entomological Commission; 1877. 



25. Catalogue of the Flora of Nebraska, by S. A., published by the Univers- 



ity of Nebraska; 1875. 



26. Catalogue of Land and Fresh Water Shells of Nebraska, by S. A ; Bul- 



letin of Geological Surveys of the Territories, 187G. 



Of the above publications the following numbers were published under the 

 direction of the Hayden Surveys, by authority of the government, namely; 

 Numbers 8, 9, 10, 15, 16, 17, 20, 21, 22, 23, 24, and 26. 



