WASHINGTON, D.C., _January, 1862_.
_To the Senate of the United States_:
I transmit herewith, for the constitutional action of the Senate,
articles of agreement and convention concluded at Niobrara, Nebraska
Territory, on the 14th day of November, 1860, between J. Shaw Gregory,
agent on the part of the United States, and the chiefs and headmen of
the Poncas tribe of Indians, being supplementary to the treaty with said
tribe made on the 12th day of March, 1858.
I also transmit a letter, dated the 4th instant, from the Secretary of
the Interior, inclosing a copy of a report of the Commissioner of Indian
Affairs of the 20th September, 1861, in relation to the subject.