This is the rule applying to ring settlements hereinbefore described. To quote further: "MARKET VALUE TO BE POSTED The current market value of the property contracted for shall be conspicuously posted, at a stated hour each day, under the direction of the Board of Directors, in the Exchange Hall and in the Settlement Room of the Board, which posting shall serve as a basis for the adjustment of all contracts settled, as herein provided on that day. "ADJUSTMENT OF BALANCES ON SETTLEMENT In order to facilitate the operation of this section, each member is required to keep a _settlement book_, in which shall be entered the names of parties with whom settlements have been made and the dates and terms of the trades included in such settlement, and the terms of such settlements, and the prices at which the commodities were originally sold or purchased, and the amounts due to or from him or them on each separate settlement, also the net amount due to or from him or them on all settlements. "CLEARING HOUSE AND REPORTS The Board of Directors is hereby authorized to provide a suitable office, with the necessary employes, to which members shall be required, at stated hours each day, to make reports, showing the net balance due to or from each member, as shown by such settlement book, and also the general balance due to or from him or them upon all such settlements; each report to be accompanied with an acceptable check for the balances, if any, due from him or them on the contracts so settled; whereupon, if said report is found to be correct, as compared with other reports rendered him, the person in charge of said office shall, at a stated hour each day, pay to each of the parties making such report any balances which he may have collected, and which shall appear to be due to them by said reports, less such charges as shall be prescribed by the Board of Directors as compensation for the services of said office. "CONFIRMATION OF TRANSACTIONS FOR FUTURE DELIVERY, ETC.