The Barracks occupy a parallelogram of about three hundred feet on the river, by nine hundred in depth. The ground in the rear belongs to the general government, to the depth of forty arpents, and can be used for the benefit of the troops. The garrison was intended to consist of four companies of infantry, but ample accommodation exists for a much larger number. The quarters of the commandant occupy the middle of the front; those of the staff and company officers being on either flank. The companies are quartered in a hollow square, which is thrown back far enough to give space for a handsome parade ground. In the rear of these quarters are the hospital, store-house, and corps des garde, and still in rear, and beyond the walls, is the post magazine, as well as other buildings necessary for the comfort and convenience of the troops. In front of the whole is a commodious wharf for the landing of supplies. [Illustration] THE UNITED STATES BRANCH MINT Is situated on what was once called Jackson Square, being nearly the former site of fort St. Charles. It is an edifice of the Ionic order, of brick plastered to imitate granite, having a centre building projecting, with two wings; is strongly built, with very thick walls, and well finished. Our limits will not permit us to go into a detailed description of its interior arrangements; which, however, may be generally spoken of as such as not to discredit the distinguished engineer who planned it. The total length of the edifice is 282 feet, and the depth about 108--the wings being 29 by 81, and the whole three stories in height. It was begun in September, 1835; and the building was perfectly completed at a cost of $182,000. The machinery is elegant and highly finished, and, when in operation, proves an interesting sight to visitors; which, from the gentlemanly urbanity of the officers of the establishment, may be easily enjoyed. The square is surrounded by a neat iron railing on a granite basement. The coinage of 1844--gold, $3,010,000--silver, $1,198,500--making in all $4,208,500. THE CUSTOM HOUSE