The mayor and aldermen were to be a Court of Record, with power to try all causes, criminal and civil, in a summary way, according to "equity and good conscience," and such laws and orders as might be made by the Company. The corporation were authorised to levy taxes for building a guild-hall, a public jail, and a school-house for teaching English, arithmetic, and merchants' accounts to Indian children, and for payment of the necessary salaries. Henceforth, two aldermen sat as justices of the Choultry; but the corporation raised no tax and founded no institution, and eventually died out from sheer want of vitality. [Sidenote: Slavery under Hindu rule.] §6. All this while the slave trade was an institution in Madras, and indeed, throughout Southern India. In most of the Hindu kingdoms of the Peninsula, the farm-labourers were slaves or serfs attached to the soil; they were probably aboriginal populations who had been reduced to slavery by their conquerors. Prisoners of war, male and female, were also compelled to serve the conquerors as domestic servants, and treated as slaves of the family. [Sidenote: Mohammedan slavery.] When Turks and Afghans introduced Mohammedan rule, slavery was recognised, but Hindu slaves might raise their condition by embracing Islam, and the converts might become important personages in the household, and marry female members of the family. The favourites of a grandee or Sultan might even marry a daughter, and rise to the rank of steward of the household or minister of state, like Joseph in the court of the Pharaohs. [Sidenote: Mogul restrictions.] When the Moguls established their dominion over Northern India there was a change for the better. It was a fundamental law of the Moguls that no subject should be enslaved, but only captives taken in war. This law was still enforced when the Moguls became Mohammedans, for they always looked upon the slavery of subjects with horror, whatever might be their race or religion. Foreign slaves, male and female, provided they were not Mohammedans, were sold by private dealers, or in the public bazaar.[4] [Sidenote: Portuguese slave trade.] Unfortunately, the Portuguese and other nations of Europe had not as yet awakened to the iniquity of slavery and the slave trade. During the Portuguese wars in Africa, Moors and Negroes were carried off as prisoners of war and sold as slaves in Lisbon. In India the Portuguese established depôts for the purchase of slaves. At Goa female slaves were to be found in every Portuguese household, and sometimes were sent into the streets to sell sweetmeats and confectionary, and earn money for their masters in other ways. [Sidenote: Kidnapping from Bengal.]