As the arrangement referred to, however, did not embrace the islands of Cuba and Puerto Rico, discriminating duties to the prejudice of American shipping continue to be levied there. From the extent of the commerce carried on between the United States and those islands, particularly the former, this discrimination causes serious injury to one of those great national interests which it has been considered an essential part of our policy to cherish, and has given rise to complaints on the part of our merchants. Under instructions given to our minister at Madrid, earnest representations have been made by him to the Spanish Government upon this subject, and there is reason to expect, from the friendly disposition which is entertained toward this country, that a beneficial change will be produced. The disadvantage, however, to which our shipping is subjected by the operation of these discriminating duties requires that they be met by suitable countervailing duties during your present session, power being at the same time vested in the President to modify or discontinue them as the discriminating duties on American vessels or their cargoes may be modified or discontinued at those islands. Intimations have been given to the Spanish Government that the United States may be obliged to resort to such measures as are of necessary self-defense, and there is no reason to apprehend that it would be unfavorably received. The proposed proceeding if adopted would not be permitted, however, in any degree to induce a relaxation in the efforts of our minister to effect a repeal of this irregularity by friendly negotiation, and it might serve to give force to his representations by showing the dangers to which that valuable trade is exposed by the obstructions and burdens which a system of discriminating and countervailing duties necessarily produces. The selection and preparation of the Florida archives for the purpose of being delivered over to the United States, in conformity with the royal order as mentioned in my last annual message, though in progress, has not yet been completed. This delay has been produced partly by causes which were unavoidable, particularly the prevalence of the cholera at Havana; but measures have been taken which it is believed will expedite the delivery of those important records.