TENTH ANNUAL REPORT 
OF THE 
BU hAUS Or WhaNOLOG Y. 
By J. W. Powet., Director. 
INTRODUCTION. 
Research among the North American Indians, in obedience 
to acts of Congress, was continued during the fiscal year 
1888-89. 
The explanation presented in several former annual reports 
of the general plan upon which the work of the Bureau has 
been performed renders a detailed repetition superfluous. The 
lines of investigation which from time to time have appeared 
to be the most useful or the most pressing have been confided 
to persons trained in or known to be specially adapted to their 
pursuit. The results of their labors are presented in the three 
series of publications of the Bureau which are provided for 
by law. A brief statement of the work upon which each one 
of the special students was actively engaged during the fiscal 
year is furnished below; but it should be noted that this state- 
ment does not specify all the studies made or services rendered 
by them. 
The assistance of explorers, writers, and students who are 
not and may not desire to be officially connected with the Bu- 
reau is again invited. Their contributions, whether in sugges- 
tions or extended communications, will always be gratefully 
acknowledged and will receive proper credit. They may be 
published as Congress will allow, either in the series of annual 
reports or in monographs or bulletins. Several valuable papers 
of this class have already been contributed and published. 
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