The efforts perseveringly prosecuted since the commencement of my Administration to relieve our trade to the Baltic from the exaction of Sound dues by Denmark have not yet been attended with success. Other governments have also sought to obtain a like relief to their commerce, and Denmark was thus induced to propose an arrangement to all the European powers interested in the subject, and the manner in which her proposition was received warranting her to believe that a satisfactory arrangement with them could soon be concluded, she made a strong appeal to this Government for temporary suspension of definite action on its part, in consideration of the embarrassment which might result to her European negotiations by an immediate adjustment of the question with the United States. This request has been acceded to upon the condition that the sums collected after the 16th of June last and until the 16th of June next from vessels and cargoes belonging to our merchants are to be considered as paid under protest and subject to future adjustment. There is reason to believe that an arrangement between Denmark and the maritime powers of Europe on the subject will be soon concluded, and that the pending negotiation with the United States may then be resumed and terminated in a satisfactory manner. With Spain no new difficulties have arisen, nor has much progress been made in the adjustment of pending ones. Negotiations entered into for the purpose of relieving our commercial intercourse with the island of Cuba of some of its burdens and providing for the more speedy settlement of local disputes growing out of that intercourse have not yet been attended with any results. Soon after the commencement of the late war in Europe this Government submitted to the consideration of all maritime nations two principles for the security of neutral commerce--one that the neutral flag should cover enemies' goods, except articles contraband of war, and the other that neutral property on board merchant vessels of belligerents should be exempt from condemnation, with the exception of contraband articles. These were not presented as new rules of international law, having been generally claimed by neutrals, though not always admitted by belligerents. One of the parties to the war (Russia), as well as several neutral powers, promptly acceded to these propositions, and the two other principal belligerents (Great Britain and France) having consented to observe them for the present occasion, a favorable opportunity seemed to be presented for obtaining a general recognition of them, both in Europe and America. But Great Britain and France, in common with most of the States of Europe, while forbearing to reject, did not affirmatively act upon the overtures of the United States.