The Spaniards used to have slaves from these natives, whom they had bought from them, and others whom they obtained in certain expeditions during the conquest and pacification of the islands. This was stopped by a brief of his Holiness [210] and by royal decrees. Consequently, all of these slaves who were then in the possession of the Spanish, and who were natives of these islands, in whatever manner they had been acquired, were freed; and the Spaniards were forever prohibited from holding them as slaves, or from capturing them for any reason, or under pretext of war, or in any other manner. The service rendered by these natives is in return for pay and daily wages. The other slaves and captives that the Spaniards possess are Cafres and blacks brought by the Portuguese by way of India, and are held in slavery justifiably, in accordance with the provincial councils and the permissions of the prelates and justices of those districts. The natives of these islands have also their personal services, which they are obliged to render--in some parts more than in others--to the Spaniards. These are done in different ways, and are commonly called the _polo_. [211] For, where there are alcaldes-mayor and justices, they assign and distribute certain natives by the week for the service of their houses. They pay these servants a moderate wage, which generally amounts to one-fourth real per day, and rice for their food. The same is done by the religious for the mission, and for their monasteries and churches, and for their works, and for public works. [212] The Indians also furnish rice, and food of all kinds, at the prices at which they are valued and sold among the natives. These prices are always very moderate. The datos, vilangos, and fiscals make the division, collect, and take these supplies from the natives; and in the same manner they supply their encomenderos when these go to make the collections. The greatest service rendered by these natives is on occasions of war, when they act as rowers and crews for the vireys and vessels that go on the expeditions, and as pioneers for any service that arises in the course of the war, although their pay and wages are given them. In the same way natives are assigned and apportioned for the king's works, such as the building of ships, the cutting of wood, the trade of making the rigging, [213] the work in the artillery foundry, and the service in the royal [214] magazines; and they are paid their stipend and daily wage. In other things pertaining to the service of the Spaniards and their expeditions, works, and any other service, performed by the natives, the service is voluntary, and paid by mutual agreement; [215] for, as hitherto, the Spaniards have worked no mines, nor have they given themselves to the gains to be derived from field labors, there is no occasion for employing the natives in anything of that sort.