I should do great injustice to the Attorney-General were I to omit the mention of his distinguished services in the measures adopted and prosecuted by him for the defense of the Government against numerous and unfounded claims to land in California purporting to have been made by the Mexican Government previous to the treaty of cession. The successful opposition to these claims has saved the United States public property worth many millions of dollars and to individuals holding title under them to at least an equal amount. It has been represented to me from sources which I deem reliable that the inhabitants in several portions of Kansas have been reduced nearly to a state of starvation on account of the almost total failure of their crops, whilst the harvests in every other portion of the country have been abundant. The prospect before them for the approaching winter is well calculated to enlist the sympathies of every heart. The destitution appears to be so general that it can not be relieved by private contributions, and they are in such indigent circumstances as to be unable to purchase the necessaries of life for themselves. I refer the subject to Congress, If any constitutional measure for their relief can be devised, I would recommend its adoption. I cordially commend to your favorable regard the interests of the people of this District. They are eminently entitled to your consideration, especially since, unlike the people of the States, they can appeal to no government except that of the Union. JAMES BUCHANAN. SPECIAL MESSAGES. WASHINGTON, _December 5, 1860_. _To the Senate of the United States_: I transmit, for the consideration of the Senate with a view to ratification, a convention for the adjustment of claims of citizens of the United States against the Government of the Republic of Costa Rica, signed by the plenipotentiaries of the contracting parties at San Jose on the 2d day of July last. JAMES BUCHANAN. WASHINGTON, _December 5, 1860_. _To the House of Representatives_: In answer to the resolution of the House of Representatives of the 9th of April last, requesting information concerning the African slave trade, I transmit a report from the Secretary of State and the documents by which it was accompanied. JAMES BUCHANAN. WASHINGTON, _January 2, 1861_. _To the Senate of the United States_: I transmit to the Senate, for its consideration with a view to ratification, a treaty of amity, commerce, and navigation, and for the surrender of fugitive criminals, between the United States and the Republic of Venezuela, signed at Caracas on the 27th of August last.