Page:Contribution to the Critique of Political Economy, A - Karl Marx.djvu/109

Rh. He makes a National Central Bank ascertain through its branches the labor-time consumed in the production of various commodities. The producer receives an official certificate of value in exchange for his commodity, i. e., he gets a receipt for as much labor-time as his commodity contains, and these bank notes of one week's labor, one day's labor, one hour's labor, etc., serve at the same time as a check for an equivalent in all other commodities stored in the bank warehouses. This is the fundamental principle carefully worked out in detail and based throughout on existing English