Congress.

The failure on the part of Spain to pay with punctuality the interest due under the convention of 1834 for the settlement of claims between the two countries has made it the duty of the Executive to call the particular attention of that Government to the subject. A disposition has been manifested by it, which is believed to be entirely sincere, to fulfill its obligations in this respect so soon as its internal condition and the state of its finances will permit. An arrangement is in progress from the result of which it is trusted that those of our citizens who have claims under the convention will at no distant day receive the stipulated payments.

A treaty of commerce and navigation with Belgium was concluded and signed at Washington on the 29th of March, 1840, and was duly sanctioned by the Senate of the United States. The treaty was ratified by His Belgian Majesty, but did not receive the approbation of the Belgian Chambers within the time limited by its terms, and has therefore become void.

This occurrence assumes the graver aspect from the consideration that in 1833 a treaty negotiated between the two Governments and ratified on the part of the United States failed to be ratified on the part of Belgium. The representative of that Government at Washington informs the Department of State that he has been instructed to give explanations of the causes which occasioned delay in the approval of the late treaty by the legislature, and to express the regret of the King at the occurrence.

The joint commission under the convention with Texas to ascertain the true boundary between the two countries has concluded its labors, but the final report of the commissioner of the United States has not been received. It is understood, however, that the meridian line as traced by the commission lies somewhat farther east than the position hitherto generally assigned to it, and consequently includes in Texas some part of the territory which had been considered as belonging to the States of Louisiana and Arkansas.

The United States can not but take a deep interest in whatever relates to this young but growing Republic. Settled principally by emigrants from the United States, we have the happiness to know that the great principles of civil liberty are there destined to flourish under wise institutions and wholesome laws, and that through its example another evidence is to be afforded of the capacity of popular institutions to advance the prosperity, happiness, and permanent glory of the human race. The great truth that government was made for the people and not the people for government has already been established in the practice and by the example of these United States, and we can do no other than contemplate its further exemplification by a sister republic with the deepest interest.

Our relations with the independent States of this hemisphere, formerly under the dominion of Spain, have not undergone any material change within the past year. The incessant sanguinary conflicts in or between those countries are to be greatly deplored as necessarily tending to disable them from performing their duty as members of the community of nations and rising to the destiny which the position and natural resources of many of them might lead them justly to anticipate, as constantly giving occasion also, directly or indirectly, for complaints on the part of our citizens who resort thither for purposes of commercial intercourse, and as retarding reparation for wrongs already committed, some of which are by no means of recent date.

The failure of the Congress of Ecuador to hold a session at the time appointed for that purpose, in January last, will probably render abortive a treaty of commerce with that Republic, which was signed at Quito on the 13th of June, 1839, and had been duly ratified on our part, but which required the approbation of that body prior to its ratification by the Ecuadorian Executive.

A convention which has been concluded with the Republic of Peru, providing for the settlement of certain claims of citizens of the United States upon the Government of that Republic, will be duly submitted to the Senate.

The claims of our citizens against the Brazilian Government originating from captures and other causes are still unsatisfied. The United States have, however, so uniformly shown a disposition to cultivate relations of amity with that Empire that it is hoped the unequivocal tokens of the same spirit toward us which an adjustment of the affairs referred to would afford will be given without further avoidable delay.

The war with the Indian tribes on the peninsula of Florida has during the last summer and fall been prosecuted with untiring activity and zeal. A summer campaign was resolved upon as the best mode of bringing it to a close. Our brave officers and men who have been engaged in that service have suffered toils and privations and exhibited an energy which in any other war would have won for them unfading laurels. In despite of the sickness incident to the climate, they have penetrated the fastnesses of the Indians, broken up their encampments, and harassed them unceasingly. Numbers have been captured, and still greater numbers have surrendered and have been transported to join their brethren on the lands elsewhere allotted to them by the Government, and a strong hope is entertained that under the conduct of the gallant officer at the head of the troops in Florida that troublesome and expensive war is destined to a speedy termination. With all the other Indian tribes we are enjoying the blessings of peace. Our duty as well as our best interests prompts us to observe in all our intercourse with them fidelity in fulfilling our engagements, the practice of strict justice, as well as the constant exercise of acts of benevolence and kindness. These are the great instruments of civilization, and through the use of them alone can the untutored child of the forest be induced to listen to its teachings.

The Secretary of State, on whom the acts of Congress have devolved the duty of directing the proceedings for the taking of the sixth census or enumeration of the inhabitants of the United States, will report to the two Houses the progress of that work. The enumeration of persons has been completed, and exhibits a grand total of 17,069,453, making an increase over the census of 1830 of 4,202,646 inhabitants, and showing a gain in a ratio exceeding 32 1/2 per cent for the last ten years.

From the report of the Secretary of the Treasury you will be informed of the condition of the finances. The balance in the Treasury on the 1st of January last, as stated in the report of the Secretary of the Treasury submitted to Congress at the extra session, was $987,345.03. The receipts into the Treasury during the first three quarters of this year from all sources amount to $23,467,072.52; the estimated receipts for the fourth quarter amount to $6,943,095.25, amounting to $30,410,167.77, and making with the balance in the Treasury on the 1st of January last $31,397,512.80. The expenditures for the first three quarters of this year amount to $24,734,346.97. The expenditures for the fourth quarter as estimated will amount to $7,290,723.73, thus making a total of $32,025,070.70, and leaving a deficit to be provided for on the 1st of January next of about $627,557.90.

Of the loan of $12,000,000 which was authorized by Congress at its late session only $5,432,726.88 have been negotiated. The shortness of time which it had to run has presented no inconsiderable impediment in the way of its being taken by capitalists at home, while the same cause would have operated with much greater force in the foreign market. For that reason the foreign market has not been resorted to; and it is now submitted whether it would not be advisable to amend the law by making what remains undisposed of payable at a more distant day.

Should it be necessary, in any view that Congress may take of the subject, to revise the existing tariff of duties, I beg leave to say that in the performance of that