Production Note 



Cornell University Libraiy produced this volume 

 to replace the irreparably deteriorated original. It 

 was scanned at 600 dots per inch resol ution and 

 compressed prior to storage using CCnT/ITU 

 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 by the United States Department of 

 Education, I£gher Education Act, Tide II-C. 



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, 1991-1996, Wallace 

 C. Olsen, series editor. 



