their deep indebtedness to the following persons for 

 help and information furnished: 



Roy E. Pardee 



John C. Kriner 



Charles McClave 



Stanley Mason 



Dr. Balliet 



William Minnich 



George W. Hackett 



Dawson Brothers 

 Particular acknowledgment is due Robert A. Tut- 

 tle for the manner in which he threw open his duck 

 plant to the authors and for the most generous 

 amount of time which he gave in furnishing infor- 

 mation. 



Special acknowledgment is likewise due Alfred 

 R. Lee, Poultryman, U. S. Department of Agricul- 

 ture, for information secured from his Farmers' Bul- 

 letins on duck raising and goose raising. 



