The plan for repair is to lift the pavement of the old road in all cases, and deposit the stone off the bed; then to repair the culverts, clear the drains, ditches, and culverts, so as to admit the free passage of water, and graduate the bed of the road, so that, when well packed by travel or other means, it will be three inches higher in the middle than at either side, for a bed of thirty feet. Having thus formed the bed of the road, the hard stone (if there be any) of the old road, broken to a size not exceeding four ounces, is to be placed on the bed of the road to a breadth of twenty feet, and a thickness not exceeding nine inches, and in cases where there is a deficiency of the old material, limestone or whinstone is to be procured to supply the deficiency to the required thickness of nine inches. Catch-waters and hollow-ways to be permanently constructed on the sides of hills, and at other places where it will be thought necessary by the superintending engineer, but in no case to exceed one in every twelve rods. In those sections where pieces of hitherto Macadamized road are included, the sand is to be taken off, and, before new metal is added, the surface loosened with a pick. The metal added to be three inches thick in the cases heretofore Macadamized. JOS. K. F. MANSFIELD, Lieutenant Corps of Engineers. * * * * * ENGINEER DEPARTMENT, WASHINGTON, August 27, 1832. _Sir_: I have to acknowledge the receipt of your letter of the 24th inst., inclosing two printed advertisements for proposals to contract for the repairs of the Cumberland Road under your charge. In answer, the department would call your attention to your remarks under the head "Plan of Repairs," and would suggest that, instead of removing the stones from the bed of the road before the drains, ditches, and culverts are put in repair, to allow the free passage of water from the road, this latter operation should be first attended to, to the end that the removal of the stone from the road might be effected without the fear of being annoyed by the accumulation of water from heavy rains. Besides, thus preparing the drains, ditches, &c., in the first place, would enable the bed to become perfectly dry by the time the stones are prepared to be replaced. I am, &c., C. GRATIOT. Lt. J. K. F. Mansfield, Corps of Engineers, Uniontown, Pa. CHAPTER X.