While Mestizo communities were growing rapidly in the colonies in South Asia, Java and the Moluccas, things were looking very different in Batavia. Here the social spectrum was, in a manner of speaking, weighed down under the burden of two opposing immigrant streams. On the one hand were the large numbers of newcomers from Europe. They continued to occupy the upper ranks in the Dutch East India Company, fashioning their world with their conventions and status norms. Among the newcomers were thousands of soldiers living in the garrisons who were not permitted to marry. On the other hand, the city swarmed with slaves who had been brought there from neighbouring regions and who, after manumission, filled the ranks of the urban proletariat. During the 17th and 18th centuries between 200,000 and 300,000 slaves were transported to Batavia. Indeed, the majority of those living in Batavia had a background of slavery. Inside the city walls, where about 20,000 people lived, at least half the population were slaves and 10 per cent were Mardijkers [interesting etymology!—J.]. Most of the extramural communities also consisted of former slaves and their children. The demographic effects of the slave trade were enormous: when slavery was abolished in 1813, population growth ceased for a long time.
The Europeans were the largest group of slave owners. There are no statistics recording how many slaves there were per household in Batavia, but figures from other comparable cities can offer some idea. In Colombo in 1694, 70 per cent of the slaves were owned by Europeans, with an average of almost 11 slaves per household; on Ambon these figures were respectively 59 per cent and almost five. In Batavia the Mardijker community fluctuated with the number of Europeans in the city, which suggests a close correlation between the number of Europeans and the emancipation of Christian slaves. There appears to have been an almost insatiable demand for slaves. The whole of Batavia — from the company’s dockyards to household personnel, from orchestras to agriculture — depended on slave labour. The ubiquitous slaves also provided easy sexual contacts for their owner. Presumably, sexual relations between masters and their slaves were so common, and so much a matter of course, that they were seldom given special mention.
Slavery left other traces on the pattern of urban life. It was customary for Europeans to baptise their slaves. This practice took off after 1648, when baptised slaves were admitted to the religious celebration of the Lord’s Supper in the Dutch Reformed Church. In Protestant churches it was not the sacrament of baptism but that of the Lord’s Supper (Eucharist or Holy Communion) that admitted a person into the community of Christian believers. Furthermore, many Batavian Europeans took pride in emancipating their baptised slaves. They would usually do this in their wills. Some of the emancipated slaves would, not surprisingly, be the natural children of slave women and European fathers. Once they had been baptised and emancipated, these former slaves merged into the Mardijker community. The Mardijkers were a flock of varied plumage. Initially, most of the slaves in Batavia came from India and Bali. This changed between 1660 and 1670, when the VOC halted its slave trade from India and Pegu (southern Burma) and, after the capture of the southern Sulawesi kingdom of Goa, channelled the extensive slave-trade network from Makassar to Batavia. The slaves of Indian origin living in Batavia quickly became a minority group. After some decades, this shift in slave supply areas resulted in the establishment of a Malay-speaking church in Batavia. The slaves from India tended to speak Portuguese, and the lingua franca in most households with slaves would probably also have been Portuguese. Thus, after their emancipation, slaves from India as well as the East Indies joined the Portuguese-speaking community. Between October 1688 and February 1708 there were 4,426 people accepted into the Portuguese-speaking church, while in the Malay-speaking church the number is no more than 306. With time, the Portuguese language began to fade out of use, and so during the 18th century the balance shifted. In the 1780s each year saw about 30 people joining the Portuguese congregation, while 31 were accepted into the Malay church.