Slaves and convicts not only saved the crown money but were themselves a source of income. The timber they logged and sawed, the stones they quarried and rafted across the harbor from Anastasia Island, AN61 the lime they burned from oyster shells, the nails and the hardware they fashioned—not all was used in the construction of the castillo and government houses. Some was sold to private persons and converted into a revenue of the crown. [Note 36: Bartolome de Arguelles 8/3/1598; Ex-Gov. Quiroga y Losada, Cadiz, Council summary 10/19/1697] (Bushnell KC)