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 I-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. 
