IN the preparation of this volume the author has kept in mind the manifest need Of giving more atten tion to the fundamental facts underlying agronomy, in the present-day training of students in agriculture. Such need has been felt directly by the author in his organization of young men for agronomic and patho logic research. It is the occasional student who finds himself prepared by sufficient training in those applied sciences related to the study of field crops to meet the awaiting problems of investigation. AS the stream can not rise higher than its source, SO the agriculture Of the future cannot be greatly improved unless the leaders themselves are placed on a firmer scientific footing.
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