It is the obvious interest, especially of neighboring nations, to provide against impunity to those who may have committed high crimes within their borders and who may have sought refuge abroad.  For this purpose extradition treaties have been concluded with several of the Central American Republics, and others are in progress.

The sense of Congress is desired, as early as may be convenient, upon the proceedings of the commission on claims against Venezuela, as communicated in my messages of March 16, 1869, March 1, 1870, and March 31, 1870.  It has not been deemed advisable to distribute any of the money which has been received from that Government until Congress shall have acted on the subject.

The massacres of French and Russian residents at Tien-Tsin, under circumstances of great barbarity, was supposed by some to have been premeditated, and to indicate a purpose among the populace to exterminate foreigners in the Chinese Empire.  The evidence fails to establish such a supposition, but shows a complicity between the local authorities and the mob.  The Government at Peking, however, seems to have been disposed to fulfill its treaty obligations so far as it was able to do so.  Unfortunately, the news of the war between the German States and France reached China soon after the massacre.  It would appear that the popular mind became possessed with the idea that this contest, extending to Chinese waters, would neutralize the Christian influence and power, and that the time was coming when the superstitious masses might expel all foreigners and restore mandarin influence.  Anticipating trouble from this cause, I invited France and North Germany to make an authorized suspension of hostilities in the East (where they were temporarily suspended by act of the commanders), and to act together for the future protection in China of the lives and properties of Americans and Europeans.

Since the adjournment of Congress the ratifications of the treaty with Great Britain for abolishing the mixed courts for the suppression of the slave trade have been exchanged.  It is believed that the slave trade is now confined to the eastern coast of Africa, whence the slaves are taken to Arabian markets.

The ratifications of the naturalization convention between Great Britain and the United States have also been exchanged during the recess, and thus a long-standing dispute between the two Governments has been settled in accordance with the principles always contended for by the United States.

In April last, while engaged in locating a military reservation near Pembina, a corps of engineers discovered that the commonly received boundary line between the United States and the British possessions at that place is about 4,700 feet south of the true position of the forty-ninth parallel, and that the line, when run on what is now supposed to be the true position of that parallel, would leave the fort of the Hudsons