We find the United States in possession of certain iron mines and works in the county of Berkeley and State of Virginia, purchased, as is presumable, on the idea of establishing works for the fabrication of cannon and other military articles by the public. Whether this method of supplying what may be wanted will be most advisable or that of purchasing at market where competition brings everything to its proper level of price and quality is for the Legislature to decide, and if the latter alternative be preferred, it will rest for their further consideration in what way the subjects of this purchase may be best employed or disposed of. The Attorney-General's opinion on the subject of the title accompanies this. There are in various parts of the United States small parcels of land which have been purchased at different times for cantonments and other military purposes. Several of them are in situations not likely to be accommodated to future purposes. The loss of the records prevents a detailed statement of these until they can be supplied by inquiry. In the meantime, one of them, containing 88 acres, in the county of Essex, in New Jersey, purchased in 1799 and sold the following year to Cornelius Vermule and Andrew Codmas, though its price has been received, can not be conveyed without authority from the Legislature. I inclose herewith a letter from the Secretary of War on the subject of the islands in the lakes and rivers of our northern boundary, and of certain lands in the neighborhood of some of our military posts, on which it may be expedient for the Legislature to make some provisions. TH. JEFFERSON. FEBRUARY 16, 1802. _Gentlemen of the Senate and of the House of Representatives_: I now transmit a statement of the expenses incurred by the United States in their transactions with the Barbary Powers, and a roll of the persons having office or employment under the United States, as was proposed in my messages of December 7 and 22. Neither is as perfect as could have been wished, and the latter not so much so as further time and inquiry may enable us to make it. The great volume of these communications and the delay it would produce to make out a second copy will, I trust, be deemed a sufficient reason for sending one of them to the one House, and the other to the other, with a request that they may be interchanged for mutual information rather than to subject both to further delay. TH. JEFFERSON. FEBRUARY 18, 1802. _Gentlemen of the Senate and of the House of Representatives_: In a message of the 2d instant I inclosed a letter from the Secretary of War on the subject of certain lands in the neighborhood of our military posts on which it might be expedient for the Legislature to make some provisions. A letter recently received from the governor of Indiana presents some further views of the extent to which such provision may be needed, I therefore now transmit it for the information of Congress. TH. JEFFERSON.