studies of the various tribes encountered. The work progressed
satisfactorily for seven months, when a severe illness caused me to
leave the tropics for a time, at least. As a result the work with the
Gulf tribes is still far from complete. The tribes living on or near the
upper waters of the Agusan river and north of Compostela were not
visited, and, hence, will not be mentioned here, while certain other
divisions received only scant attention. No attempt is here made to
treat of the Christianized or Mohammedanized people, who inhabit a
considerable part of the coast and the Samal Islands, further than to
indicate their influence on the wild tribes. Both have settled in Davao
District in historic times, and have taken many native converts into
their villages. From these settlements new ideas, types of garments, and
industries have spread toward the interior, while the extensive slave
trade carried on by the Moro has had a marked effect on all the tribes
with whom they have come in contact.

In the preparation of this paper I have, so far as possible, drawn on
the knowledge of others to fill in the gaps in my own notes. In spite of
this the information on certain groups is still so scanty that this can
be, at best, only a sketch. It is offered at this time in the hope that
it may serve as a help to other anthropologists who may plan to visit
this most interesting field.

I wish here to extend my thanks to the various civil and military
authorities who gave me valuable assistance; also to Captain James
Burchfield, H. S. Wilson, James Irwin, Otto Hanson, William Gohn, Henry
Hubbell, and Juan de la Cruz, planters, whose wide knowledge of, and
acquaintance with the interior tribes made possible my work in many
localities.