This study goes beyond the ‘first and last appearance’ approach of cartographic historians to examine the social contexts in which the Kong Mountains were first depicted in and then eliminated from nineteenth-century maps of Africa. This history shows that the conventional periodization of the history of cartography into ‘decorative’ and ‘scientific’ phases is greatly exaggerated. We trace the mountains' origins to the geographer James Rennell and show how their purported existence served to support his arguments on the course of the Niger River at the turn of the nineteenth century. The enduring depiction of the Kong Mountains throughout the century illustrates the authoritative power of maps. This authority is based on the public's belief that cartographers are guided by an ethic of accuracy and are applying scientific procedures in mapmaking. Despite doubts about the existence of this mountain chain, the ‘extraordinary authority’ of maps helped to perpetuate an erroneous spatial image of West Africa until Binger's famous expedition in the late 1880s. With the publication of his travels and maps, Binger became the new authority on West African geography. His work altered the subsequent cartography of the region and substantially contributed to French empire-building.

This paper analyses the demography of nineteenth-century Madagascar in the light of the debate generated by the demographic transition theory. Both supporters and critics of the theory hold to an intrinsic opposition between human and ‘natural’ factors, such as climate, famine and disease, influencing demography. They also suppose a sharp chronological divide between the pre-colonial and colonial eras, arguing that whereas ‘natural’ demographic influences were of greater importance in the former period, human factors predominated thereafter. This paper argues that in the case of nineteenth-century Madagascar the human factor, in the form of the Merina state, was the predominant demographic influence. However, the impact of the state was felt through natural forces, and it varied over time. In the late eighteenth and early nineteenth centuries Merina state policies stimulated agricultural production, which helped to create a larger and healthier population and laid the foundation for Merina military and economic expansion within Madagascar. From the 1820, the cost of such expansionism led the state to increase its exploitation of forced labour at the expense of agricultural production and thus transformed it into a negative demographic force. Infertility and infant mortality, which were probably more significant influences on overall population levels than the adult mortality rate, increased from 1820 due to disease, malnutrition and stress, all of which stemmed from state forced labour policies. Available estimates indicate little if any population growth for Madagascar between 1820 and 1895. The demographic ‘crisis’ in Africa, ascribed by critics of the demographic transition theory to the colonial era, stemmed in Madagascar from the policies of the imperial Merina regime which in this sense formed a link to the French regime of the colonial era. In sum, this paper questions the underlying assumptions governing the debate about historical demography in Africa and suggests that the demographic impact of political forces be re-evaluated in terms of their changing interaction with ‘natural’ demographic influences.

This article has concentrated on the efforts made by the British colonial regime in Northern Nigeria to suppress the slave trade. It has shown that the slave trade disappeared gradually, in three phases. The first extended from 1900 to about 1908, the second lasted until about 1919, while the third continued until the disappearance of the slave trade at the end of the 1930s. The task of suppression was carried out by a variety of means: military, including the patroling of trade routes and policing of strategic locations; political and diplomatic, involving co-operation with other colonial powers in the area; and judicial, including arrest, prosecution and punishment of offenders. In all these efforts the colonial administration received assistance from the Native Authorities; by the third phase these Authorities and the Native Courts were the most active forces against slaving. The slave trade dealt to a very significant extent in children. In the environment in which the trade was conducted the dealers developed a range of tricks and subterfuges to evade detection by the law enforcement agencies. The long borders which the agencies had to patrol, the manpower problems which they faced, and the relative ease with which slaves could be obtained in times of adversity combined to make the struggle against slaving a protracted one. Time was not, however, on the side of the traders. Improvements in communications, a stronger administration, the growing effectiveness of patrols, and the deterrent effects of judicial action cut into and finally eliminated the slave trade.

This paper highlights analytical and historical commonalities between Belgian African anti-polygamy measures and the unusual practice of taxing urban un-married women. Secondly, it interprets the 1950s rebellion against this tax in Bujumbura in light of how the colonial category of femme libre and a 1950 antipolygamy law converged in the Muslim African community of Buyenzi. Colonial categories and camouflage, name-giving and name-calling, noise and silence are central to the interpretation.

Belgian African anti-polygamy attitudes and measures are first reviewed, including polygamous wife liberations in the Leopoldian period; the introduction of supplementary wife taxation in 1910; demographic anxieties from the 1920s; and post-World War II worries about ‘camouflaged polygamy’, leading to the passage of the anti-polygamy law in 1950. The published evidence of ‘camouflaged polygamy's’ noisiest critics, élite African ‘new men’ or évolués, suggests that polygamy was increasing in rural areas due to forced labour obligations, and becoming camouflaged in response to pro-natalist rewards for monogamy. A second section analyses the urban single women's tax in terms of the embarrassed silence surrounding this new form of moral taxation, which was introduced following legislation in the 1930s designed to better differentiate ‘customary’ space from urban sites of ‘evolution’. A third section draws on Buyenzi women's oral memories to reconstruct their noisy rebellion against the tax. The conclusion analyses these Muslim women's outrage in light of the contradictions of gaining municipal revenue through moral taxation, an urban surveillance process which necessitated naming the category of persons taxed. The etymology of the term femme libre demonstrates that polygamous wife and prostitute were associated categories in colonial thought from the Leopoldian period. Colonial authorities lost control over these categories in this atypical ‘extra-customary’ township super-imposed on a pre-colonial ‘customary’ community. The new African need for camouflaging plural wives, created by the strong urban expulsion powers of the 1950 anti-polygamy law, converged with the name-calling of the single women's tax, resulting in a local struggle to control the naming process. The category of women created by the tax coalesced around the sexual insult embedded in the tax's name, embarrassing colonial authorities into exemptions and inciting the men of their community into a tax rebellion.