In consequence of the delay attending the approval by the Senate of the
extradition treaty with Mexico signed on the 11th December last, it is
impossible to effect the exchange of ratifications of that and the
postal convention of the same date within the period assigned by those
instruments.

I recommend, therefore, the passage of a resolution at the earliest
practicable moment extending the time specified in the eighth article of
the extradition treaty and in the twelfth article of the postal
convention for the exchange of ratifications for sixty days from and
after the 11th June next, the date of the expiration of the period named
for that purpose in both instruments.

ABRAHAM LINCOLN.



WASHINGTON, D.C., _April 15, 1862_.

_To the Senate of the United States_:

I transmit herewith, for the consideration and such constitutional
action as the Senate may deem proper to take, a treaty negotiated on the
6th March, 1861, between late Agent Vanderslice, on the part of the
United States, and certain delegates of the Sac and Fox of the Missouri
and the Iowa tribes of Indians; also certain petitions of said tribes,
praying that the treaty may be ratified with an amendment as set forth
in said petitions. A letter of the Secretary of the Interior, with a
report of the Commissioner of Indian Affairs and letter of the present