The repairs of the masonry of the bridges and walls on Wheeling Hill it is very desirable to effect by contract, if practicable. On Wheeling Hill the object may be effected by requiring the masonry to conform with that already executed, particularly in regard to the size and quality of the stone, paying for it by the perch measured in the wall when finished, reserving the one-fifth of the value from monthly payments as security for the faithful execution of the whole work. The repairs of the bridge may be executed in like manner, specifying the masonry of the bridge now building over Wheeling Creek as the standard, excepting stones placed on edge. It is desirable to postpone the repair of all masonry to the latest date, excepting only such parts as are necessary to perfect the grade; you will make your contracts accordingly. The masonry of the culverts and some of the bridges must be finished in time, including the filling to make good the roadway, to permit the contractor for grading to comply with his agreement. The usual one-fifth of the value of work done being retained until the expiration of the time for completing the whole work, when this sum is to be applied either to carry into effect the remaining provisions of the agreement, as stipulated to be executed, or paid to the contractor, if the work has been faithfully executed according to the tenor of the agreement. You will make all your payments by checks drawn on the bank through which I shall make your remittances, taking duplicate receipts for moneys thus paid, attached to a bill giving the quantity rate, cost, and date of the receipt of the article clearly and distinctly expressed. Your check book must be added up, and the balance in bank ascertained every Saturday evening, which balance must be reported in the weekly reports to be forwarded to me, as required last season. The balance of your account, as appears by your ledger account with me, must also form an item in the weekly report. The assistant engineer will make an inspection of these books, and report to me whenever he comes on your section of the road. The receipted vouchers you will forward to the office at Brownsville, of all payments made during the week at the end of such week, reserving the duplicate until called for by myself or the assistant engineer.