Production Note 

 Cornell University Library produced this 

 volume to replace the irreparably 

 deteriorated original. It was scanned 

 using Xerox software and equipment at 

 600 dots per inch resolution and 

 compressed prior to storage using CCITT 

 Group 4 compression. The digital data 

 were used to create Cornell's 

 replacement volume on paper that meets 

 the ANSI Standard Z39. 48-1992. The 

 production of this volume was supported 

 in part by the National Endowment for 

 the Humanities. Digital file copyright 

 by Cornell University Library 1994. 



Scanned as part of the A.R. Mann Library 

 project to preserve and enhance access 

 to the Core Historical Literature of the 

 Agricultural Sciences. Titles included 

 in this collection are listed in the 

 volumes published by the Cornell 

 University Press in the series THE 

 LITERATURE OF THE AGRICULTURAL SCIENCES, 

 1991-1995, Wallace C. Olsen, series 

 editor. 



