History of Bolivia to 1809 reduction in silver output. After 1700 only small amounts of bullion from Upper Peru were shipped to Spain. Kings from the Bourbon Dynasty in Spain tried to reform the colonial economy in the mid-eighteenth century by reviving mining. The Spanish crown provided the financial support necessary to develop deeper shafts, and in 1736 it agreed to lower the tax rate from 20 to 10 percent of the total output. The crown also helped create a minerals purchasing bank, the Banco de San Carlos in 1751 and subsidized the price of mercury to local mines. The foundation of an academy of
House of Bourbon a "commoner" (referring back to the Medieval origins of the Bourbon Dynasty's name and referring to Hugh Capet, founder of the Capetian Dynasty). Members of the House of Bourbon-Condé and its cadet branches, which never ascended to the throne, used the surname "de Bourbon" until their extinction in 1830. The daughters of Gaston, Duke of Orleans, were the first members of the House of Bourbon since the accession of Henry IV to take their surname from the appanage of their father (d'Orleans). Gaston died without a male heir; his titles reverted to the crown. It was given to his nephew,