were made by the commissioner of the United States to effect these changes. Another effort was about to be made for the same purpose by our commissioner in conjunction with the ministers of England and France, but this was suspended by the occurrence of hostilities in the Canton River between Great Britain and the Chinese Empire. These hostilities have necessarily interrupted the trade of all nations with Canton, which is now in a state of blockade, and have occasioned a serious loss of life and property. Meanwhile the insurrection within the Empire against the existing imperial dynasty still continues, and it is difficult to anticipate what will be the result.

Under these circumstances I have deemed it advisable to appoint a distinguished citizen of Pennsylvania envoy extraordinary and minister plenipotentiary to proceed to China and to avail himself of any opportunities which may offer to effect changes in the existing treaty favorable to American commerce. He left the United States for the place of his destination in July last in the war steamer Minnesota. Special ministers to China have also been appointed by the Governments of Great Britain and France.

Whilst our minister has been instructed to occupy a neutral position in reference to the existing hostilities at Canton, he will cordially cooperate with the British and French ministers in all peaceful measures to secure by treaty stipulations those just concessions to commerce which the nations of the world have a right to expect and which China can not long be permitted to withhold. From assurances received I entertain no doubt that the three ministers will act in harmonious concert to obtain similar commercial treaties for each of the powers they represent.

We can not fail to feel a deep interest in all that concerns the welfare of the independent Republics on our own continent, as well as of the Empire of Brazil.

Our difficulties with New Granada, which a short time since bore so threatening an aspect, are, it is to be hoped, in a fair train of settlement in a manner just and honorable to both parties.

The isthmus of Central America, including that of Panama, is the great highway between the Atlantic and Pacific over which a large portion of the commerce of the world is destined to pass. The United States are more deeply interested than any other nation in preserving the freedom and security of all the communications across this isthmus. It is our duty, therefore, to take care that they shall not be interrupted either by invasions from our own country or by wars between the independent States of Central America. Under our treaty with New Granada of the 12th December, 1846, we are bound to guarantee the neutrality of the Isthmus of Panama, through which the Panama Railroad passes, "as well as the rights of sovereignty and property which New Granada has and possesses over the said territory." This obligation is rounded upon equivalents granted by the treaty to the Government and people of the United States.

Under these circumstances I recommend to Congress the passage of an act authorizing the President, in case of necessity, to employ the land and naval forces of the United States to carry into effect this guaranty of neutrality and protection. I also recommend similar legislation for the security of any other route across the Isthmus in which we may acquire an interest by treaty.

With the independent Republics on this continent it is both our duty and our interest to cultivate the most friendly relations. We can never feel indifferent to their fate, and must always rejoice in their prosperity. Unfortunately both for them and for us, our example and advice have lost much of their influence in consequence of the lawless expeditions which have been fitted out against some of them within the limits of our country. Nothing is better calculated to retard our steady material progress or impair our character as a nation than the toleration of such enterprises in violation of the law of nations.

It is one of the first and highest duties of any independent state in its relations with the members of the great family of nations to restrain its people from acts of hostile aggression against their citizens or subjects. The most eminent writers on public law do not hesitate to denounce such hostile acts as robbery and murder.

Weak and feeble states like those of Central America may not feel themselves able to assert and vindicate their rights. The case would be far different if expeditions were set on foot within our own territories to make private war against a powerful nation. If such expeditions were fitted out from abroad against any portion of our own country, to burn down our cities, murder and plunder our people, and usurp our Government, we should call any power on earth to the strictest account for not preventing such enormities.

Ever since the Administration of General Washington acts of Congress have been enforced to punish severely the crime of setting on foot a military expedition within the limits of the United States to proceed from thence against a nation or state with whom we are at peace. The present neutrality act of April 20, 1818, is but little more than a collection of preexisting laws. Under this act the President is empowered to employ the land and naval forces and the militia "for the purpose of preventing the carrying on of any such expedition or enterprise from the territories and jurisdiction of the United States," and the collectors of customs are authorized and required to detain any vessel in port when there is reason to believe she is about to take part in such lawless enterprises.

When it was first rendered probable that an attempt would be made to get up another unlawful expedition against Nicaragua, the Secretary of State issued instructions to the marshals and district attorneys, which were directed by the Secretaries of War and the Navy to the appropriate army and navy officers, requiring them to be vigilant and to use their best exertions in carrying into effect the provisions of the act of 1818. Notwithstanding these precautions, the expedition has escaped from our shores. Such enterprises can do no possible good to the country, but have already inflicted much injury both on its interests and its character. They have prevented peaceful emigration from the United States to the States of Central America, which could not fail to prove highly beneficial to all the parties concerned. In a pecuniary point of view alone our citizens have sustained heavy losses from the seizure and closing of the transit route by the San Juan between the two oceans.

The leader of the recent expedition was arrested at New Orleans, but was discharged on giving bail for his appearance in the insufficient sum of $2,000.

I commend the whole subject to the serious attention of Congress, believing that our duty and our interest, as well as our national character, require that we should adopt such measures as will be effectual in restraining our citizens from committing such outrages.

I regret to inform you that the President of Paraguay has refused to ratify the treaty between the United States and that State as amended by the Senate, the signature of which was mentioned in the message of my predecessor to Congress at the opening of its session in December, 1853. The reasons assigned for this refusal will appear in the correspondence herewith submitted.

It being desirable to ascertain the fitness of the river La Plata and its tributaries for navigation by steam, the United States steamer Water Witch was sent thither for that purpose in 1853. This enterprise was successfully carried on until February, 1855, when, whilst in the peaceful prosecution of her voyage up the Parana River, the steamer was fired upon by a Paraguayan fort. The fire was returned, but as the Water Witch was of small force and not designed for offensive operations, she retired from the conflict. The pretext upon which the attack was made was a decree of the President of Paraguay of October, 1854, prohibiting