WASHINGTON, _August 10, 1850_.
_To the Senate of the United States_:
I transmit herewith a communication from the Department of the
Interior and the papers which accompanied it, being the first part of
the results of investigations by Henry R. Schoolcraft, esq., under the
provisions of an act of Congress approved March 3, 1847, requiring the
Secretary of War "to collect and digest such statistics and materials
as may illustrate the history, the present condition, and future
prospects of the Indian tribes of the United States,"