Production Note 
Cornell University Library produced this volume to replace the 
irreparably deteriorated original. It was scanned at 600 dots per inch 
resolution and compressed prior to storage using CCITT/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, Higher Education Act, Title 
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, 1991-1995, Wallace C. 
Olsen, series editor. 
