6. To permit the party hereto of the first part, if, in its judgment, the currents of trade should so require, temporarily to increase or diminish the proportion, as herein provided to the party hereto of the second part, for itself and its connections, as the whole business of transporting petroleum and its products, as between the party hereto of the second part, the Erie Railway Company and the New York Central Railroad Company. The party of the second part in such case, to receive from the party hereto of the first part, in full payment or indemnity, for the excess or deficiency, one-half the net schedule rates on such excess or deficiency; the other half to be paid _pro rata_ to the said other companies, whose apportioned quantity of transportation shall thus be varied; but such diversion of business shall not, at any time, exceed one week, nor be repeated without an interval of at least sixty days, unless with the consent of the party hereto of the second part. Also, that whenever from time to time, as aforesaid, a temporary diversion of a part of the apportioned transportation of the party of the second part, to the other railroads aforesaid, or to either of them, shall become necessary, cars of the party of the second part may be loaded by the party of the first part, and sent away over such other railroads, or either of them, but the cars so sent away shall be returned without unnecessary delay, and in as good order as when taken to the railroads of the party of the second part, and mileage at the usual rates paid for their use while absent. 7. To furnish with as much regularity as possible, at all times, good and sufficient cars, and other means suitable and necessary for the safe and prompt transportation of all crude petroleum and its products, either in bulk or in barrels, which the party hereto of the first part shall desire to send from one point to another (and which shall be supplied with as much regularity as possible), on or over the railroads of the party of the second part and its connections. 8. To make manifests or way-bills of all petroleum or its products, transported over any portion of the railroads of the party of the second part or its connections, which manifests shall state the name of the consignor, the place of shipment, the kind and actual quantity of the article shipped, the name of the consignee, and the place of destination, with the rate and gross amount of freight and charges, and to send daily to the principal office of the party of the first part, duplicates of all such manifests or way-bills. ARTICLE THIRD