To the Ottoman Public Debt Administration peace and prosperity were means to reaching another goal—a full treasury. Greater income for the Turkish farmer, miner, artisan, and trader would mean greater opportunities for the extension of tax levies. And the greater the tax receipts the greater would be the payments to the European bondholders and the greater the value of the bonds themselves. Obviously, railway construction would improve Turkish credit in the financial centers of the world. But, for the time, the Ottoman Government had at its disposal neither the capital nor the technical skill to carry into execution the plans for an ambitious program of railway building, and private enterprise showed no disposition to interest itself without substantial guarantees. It was under these circumstances, therefore, that the Ottoman Public Debt Administration recommended to the Sultan that certain revenues of his empire should be set aside for the payment of subsidies to railway companies.[18] The Public Debt Administration were not unaware that the payment of railway subsidies would materially increase the amount of the imperial debt and mortgage certain of the imperial revenues. But they were confident that railways would be a powerful stimulant to economic prosperity in Turkey and would ultimately increase the revenues of the Government by an amount in excess of the amount of the subsidies. They believed that generous initial expenditures in a worth-while enterprise might yield generous final returns. As an instance of this they could point to the development of sericulture in Turkey. Under the auspices of the Ottoman Public Debt Administration tens of thousands of dollars were expended in the reclamation of more than 130,000 acres of land and the planting thereon of over sixty million mulberry trees. As a result, the silk crop increased more than tenfold during the years 1890–1910, with a result that there was a corresponding increase in the 10% levy (or tithe) on agricultural products in the regions affected. If the Public Debt Administration were actuated by self-interest, at least it was intelligent and far-sighted self-interest.[19]