Mr. Rockefeller now had something besides a theory to present to the gentlemen he wished to go into his third scheme. He had the most persuasive of all arguments—an actual achievement. “Three years ago,” he could tell them, “I took over the Cleveland refineries. I have managed them so that to-day I pay a profit to nobody. I do my own buying, I make my own acid and barrels, I control the New York terminals of both the Erie and Central roads, and ship such quantities that the railroads give me better rates than they do any other shipper. In 1873 I shipped over 700,000 barrels by the Central, and my profit on my capitalisation, $2,500,000, was over $1,000,000. This is the result of combination in one city. The railroads now have arranged a new tariff, by which they mean to put us all on an equal footing. They say they will give no rebates to anyone, but if we can join with Cleveland the strongest forces in other great shipping points, and apply to them the same tactics I have employed, we shall become the largest shipper, and can demand a rebate in return for an equal division of our freight. We proved in 1872–1873 that we could not do anything by an open association. Let us who see what a combination strictly carried out will effect unite secretly to accomplish it. Let us become the nucleus of a _private_ company which gradually shall acquire control of all refineries everywhere, become the only shippers, and consequently the master of the railroads in the matter of freight rates.” It was six hours before the gentlemen in conference left the pavilion, and when they came out Mr. Warden and Mr. Lockhart had agreed to transfer their refineries in Philadelphia and Pittsburg to the Standard Oil Company, of Cleveland, taking stock in exchange. They had also agreed to absorb, as rapidly as persuasion or other means could bring it about, the refineries in their neighbourhood. Their union with the Standard was to remain an absolute secret—the concerns operating under their respective names.[44] On October 15, 1874, Mr. Rockefeller consummated another purchase of as great importance. He bought the works of Charles Pratt and Company, of New York city. As before, the purchase was secret. The strategic importance of these purchases for one holding Mr. Rockefeller’s vast ambition was enormous. It gave him as allies men who were among the most successful refiners, without doubt, in each of the three greatest refining centres of the country outside of Cleveland, where he ruled, and of the creek, where he had learned that neither he nor any member of the South Improvement Company could do business with facility. To meet these purchases the stock of the Standard Oil Company was increased, on March 10, 1875, to $3,500,000.[45] The value of the concern as a money-earner at this early date, 1874, is shown by the fact that Pratt and Company paid not less than $265 for the Standard stock they received in exchange for their works.[46]