I find from a perusal of the english papers, that fencibles are raising in all parts of the country, and every precaution taking, to put the kingdom in the best state of defence, in case of an invasion. I have for some years thought a few regiments of riflemen would much contribute to this desirable end. Some lessons I have received in the use of the rifle, from back woodsmen, since my arrival in America, have confirmed me in this opinion. I know it will be objected, that the rifle is not a fair weapon. Perhaps it is not.--I should be sorry to see it in general use in the european armies: but surely it may be used to repel an invader, without any infringement of the Law of Nations. What I would recommend to Government on this subject is, first, OF FORMING THE CORPS. Beside the officers who have paid any attention to this method of fighting during the last war in America, some of the most experienced back woodsmen and indian chiefs should be sent for from Canada. Independent of the regiments on the ordinary establishment, I would recommend one of _select men_, with better pay, &c., to be formed from the other rifle corps; _merit_ being the only recommendation. Volunteer companies, in different parts of the country, might soon be formed, composed of gentlemen, sportsmen, gamekeepers, &c. Proper persons should make the circuit of the kingdom, to instruct them in some of the most necessary particulars; such as loading, with the proper use of the patch; to draw a level, making a just allowance for distance, &c. OF RIFLES. I would by no means recommend _contract_ let proper encouragement be given to gun-smiths, to supply rifles of the best construction, _loading from the muzzle_.--Their being of an uniform length, or bore, is of no consequence, as every man should cast and cut his own ball. The barrel, mounting, and lock, should be covered with a composition, to render them as dull, and as little discernible, as possible. The locks should always be in the very best firing order, and constructed to give fire as easily as the nature of the service will admit. Oil, for the inside of the rifle, should be regularly served; and the flints should be of a much better quality than those used in muskets. POWDER. Every thing depends upon this article's being of an uniform degree of strength: it should be of the best quality, but not glazed. ACCOUTREMENTS AND DRESS, Cannot be better than those used by the rifle corps in this country, except perhaps that the latter should be of a dusky green, the colour died in the Highlands of Scotland for plaids; even the cap should be of this colour: a sort of helmet, constructed so as to afford a rest to fire from, when lying on the belly. EXERCISE, &c.