l
that was necessary. It was to be a light task to fill idle time in
summer, report to be made in fall. Two years have passed since that
time; the associates have dropped by the way; the manuscript
contains five times the number of terms in the original "Explanation."
and if it is published now, it is not because I believe it to be complete;
but because I do not believe it can be made complete except as the
result of criticism and voluntary addition by specialists throughout
the country.

It is twenty-six years since the original list was published and nothing
can better illustrate the advances made than a comparison between
the old and the new Glossary. No one realizes better than I the fact
that as students have increased in each order, each has followed an
independent line of research, absolutely without regard to the work
done elsewhere. In consequence, we have several terms for the same
thing in many cases and, in an equal number, several meanings to the
same term. As no one man can now-a-days cover the entire field of
Entomology, it goes without saying that I was compelled to rely partly
upon books and partly upon the good nature of correspondents to
make the work even approximately complete.

The first notable contribution came from Professor Justus W. Folsom,
of Urbana, Illinois, who sent me over 2000 cards of terms collected by
himself and his assistants, and these added materially at the
beginning of the work. A number of correspondents were good enough
to send in lists of terms in Coleoptera, Lepidoptera, Orthoptera,
Hemiptera and Neuroptera, and to refer me to literature where
explanations of other special terms could be found.

After the cards were so far advanced as to warrant a preliminary
manuscript, Dr. Philip P. Calvert of the University of Pennsylvania.
Mr. Nathan Banks of Washington, D.C., and Mr. C. W. Johnson of
the Boston Society of Natural History went carefully over the entire
work and by their criticisms and additions contributed materially to
such merit as it possesses. To these gentlemen and to the many
others not specifically mentioned I give thanks for their assistance,
and if there have not been more co-workers it has been only because
of the time element that seems to demand the best that is ready,
rather than a delay to secure perfection.

It would be interesting to go at length into the history of the
correspondence to determine what sort of terms should or should not
be included