DEAR SIR,--I have racked my memory and ransacked my papers, to enable myself to answer the inquiries of your favor of October the 15th; but to little purpose. My papers furnish me nothing, my memory, generalities only. I know that while I was in Europe, and anxious about the fate of our seafaring men, for some of whom, then in captivity in Algiers, we were treating, and all were in like danger, I formed, undoubtingly, the opinion that our government, as soon as practicable, should provide a naval force sufficient to keep the Barbary States in order; and on this subject we communicated together, as you observe. When I returned to the United States and took part in the administration under General Washington, I constantly maintained that opinion; and in December, 1790, took advantage of a reference to me from the first Congress which met after I was in office, to report in favor of a force sufficient for the protection of our Mediterranean commerce; and I laid before them an accurate statement of the whole Barbary force, public and private. I think General Washington approved of building vessels of war to that extent. General Knox, I know, did. But what was Colonel Hamilton's opinion, I do not in the least remember. Your recollections on that subject are certainly corroborated by his known anxieties for a close connection with Great Britain, to which he might apprehend danger from collisions between their vessels and ours. Randolph was then Attorney General; but his opinion on the question I also entirely forget. Some vessels of war were accordingly built and sent into the Mediterranean. The additions to these in your time, I need not note to you, who are well known to have ever been an advocate for the wooden walls of Themistocles. Some of those you added, were sold under an act of Congress passed while you were in office. I thought, afterwards, that the public safety might require some additional vessels of strength, to be prepared and in readiness for the first moment of a war, provided they could be preserved against the decay which is unavoidable if kept in the water, and clear of the expense of officers and men. With this view I proposed that they should be built in dry docks, above the level of the tide waters, and covered with roofs. I further advised, that places for these docks should be selected where there was a command of water on a high level, as that of the Tyber at Washington, by which the vessels might be floated out, on the principle of a lock. But the majority of the legislature was against any addition to the navy, and the minority, although for it in judgment, voted against it on a principle of opposition. We are now, I understand, building vessels to remain on the stocks, under shelter, until wanted, when they will be launched and finished. On my plan they could be in service at an hour's notice. On this, the finishing, after launching, will be a work of time.