Production Note 
Comell 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, 1991-1996, Wallace C. Olsen, series 
editor. 
