I enclose you a petition from a woman (Mary Barnett) who complains that her son of thirteen years of age, is detained against her will in the naval military service. Having never before received an application of the kind in that department, I know not what are the rules there. But in the land service we have had many cases of enlistments of infants, and there the law is considered to be, and our practice in conformity, as follows: An infant is considered as incapable of binding himself by enlistment, and may at any time be reclaimed by a parent, guardian, next friend, or may quit of his own accord, on complaint from a parent, &c. We direct the officer to inquire into the fact of infancy, and if he believes him under age he discharges him. If he believes him of full age, we advise the parent, &c., that he may take out a Habeas Corpus, and have the fact tried before an impartial judge: if enlisted with the consent of the parent, &c., it must be by indentures as prescribed by law for an apprentice or servant, this being the only mode of obligation in which the law will compel _specific_ execution. In case of a verbal or a common written subscription of engagement, even with consent of the parent, _damages_ only can be recovered for withdrawing from it. I presume the rules in the Navy Department must be the same, as we must conform ourselves to the law in all departments. I directed the woman to call on me again to-morrow. Will you be so good as to enable me to give her an answer? Affectionate salutations. TO GOVERNOR TOMPKINS. WASHINGTON, May 4, 1808. SIR,--I duly received your favor of April 18th, covering an Act of the legislature of New York, appropriating $100,000 to aid and expedite the defence of the city and port of New York, and $20,000 to aid in and contribute to the defence of the northern and western frontiers, and expressing a desire to receive an opinion on the application of those sums.