consider what part of it is good evidence for his purpose, and how to
test his reasoning from the facts; third, that with his material
gathered and culled and his plan settled he shall turn his attention to
presenting it in the most effective way possible for the particular
occasion.

Throughout I have tried to lay stress on the making of arguments, not as
an end in themselves, and to fit certain more or loss arbitrary
formulas, but as the practical kind of appeal that every young man is
already making to his fellows on matters that interest him, and that he
will make more and more in earnest as he gets out into the world. The
tendency of some of the books to treat argumentation, especially in the
form of debating, as a new variety of sport, with rules as elaborate and
technical as those of football, turns away from the subject a good many
young men to whom the training in itself would be highly valuable. The
future of the subject will be closely dependent on the success of
teachers in keeping it flexible and in intimate touch with real affairs.
I have made some suggestions looking towards this end in Appendix II.

My obligations to earlier workers in the field will be obvious to all
who know the subject. In especial, I, like all other writers on the
subject, have built on foundations laid by Professor George Pierce
Baker, of Harvard University.

For permission to use the articles from _The Outlook_ I am indebted to
the courtesy of the editors of that journal; for the article on "The
Transmission of Yellow Fever by Mosquitoes," to the kindness of General
Sternberg, and of the editor of _The Popular Science Monthly_.

J.H. GARDINER