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. 



