, in the first place, to the
eminent author himself, for the revision of the plate-proof of the entire
work, and then to Professor WILLIAM F. ALLEN, of the University of
Wisconsin, for his interest in the progress of the enterprise, and for
many valuable suggestions; also to Professor W. G. SUMNER, of Yale
College, for some excellent hints as to the best translation of certain
words in the Appendix on Paper Money.

AUTHOR'S PREFACE. (1ST EDITION.)

My _System der Volkswirthschaft_ shall, _Deo volente_, be completed in
four parts. The second shall contain the national economy of agriculture
and the related branches of natural production; the third, the national
economy of industry and commerce; the fourth, of the economy of the state
and of the commune (_Gemeindehaushalt_). While the entire work shall
constitute one systematic whole, each part shall have its own appropriate
title, constitute an independent treatise, and be sold separately.

Of the peculiar method which I have followed in this work, and which will
produce still better fruits in the succeeding volumes, I have given a
sufficient explanation in