Descent groups, chiefdoms, and South African historiography

African Studies Seminar series. Paper presented July, 1984A number of impressive historical studies by a group of young South African scholars has recently appeared, seeking to apply new insights in tracing the effects of the imposition of colonial rule over the indigenous peoples of the sub-continent (e.g. Slater 1976; Hedges 1978; Peires 1981; Bonner 1980, 1983; Guy 1979, 1981; Delius 1982, Hamilton and Wright 1984). Some of these authors, notably Slater, Hedges, Guy, Bonner, Hamilton and Wright, seek, as a starting point of their analyses, to establish the nature of the ‘mutation’ to chieftainship that must have occurred from a previous period in which there were no chiefs. These works focus mainly on the Nguni, especially the incorporative states of Zulu and Swazi; others, like those of Peires on the Xhosa and Delius on the Pedi, tend to assume chieftainship as given and take their analyses from there

Chieftainship in Transkeian political development

In November 1963 the inhabitants of the Transkeian Territories, the largest block of Bantu reserve in the Republic of South Africa, went to the polls to elect representatives for a Legislative Assembly, upon whom the responsibility for the government of this, the first so-called ‘Bantustan’ to achieve a limited form of self-government, is to be laid. The election was the culminating point in a series of changes in the administrative structure of the area which have been characterized by an emphasis on the institution of chieftainship as the basis of local government. After approximately 60 years of rule through magistrates (later supplemented by a system of district councils) the Bantu Authorities Act of 1955 was introduced, giving greatly enhanced powers to the Chiefs, who now became the heads of the tribally-structured Bantu Authorities

Six native churches: a preliminary survey of religion in an urban location

This report had its genesis in a proposed thesis, purporting to investigate the part that Religion (including both Christianity and the indigenous beliefs of the Bantu) is playing in the lives of the people at Langa, the Municipal Native location lying about eight miles from Cape Town. It was felt that, after some two hundred years of missionary endeavour in South Africa, the time was ripe for an assessment of the degree to which Christianity had become part of the Bantu scheme of things, to see how far it has changed the culture and outlook of the people, and how far it, in its turn, has been modified by the ever-menacing mass of Africa heathendom. It was hoped that the finished work would be of use, not only yo students of sociology, but also to the practical man on the mission-field who so often, working hard in his corner of the vineyard, has no opportunity to estimate what effects his labour is having on the bulk of the people

FARM POLICY FOR THE 1970'S

Agricultural and Food Policy,

Lunar Dust and Lunar Simulant Activation and Monitoring

Prior to returning to the moon, understanding the effects of lunar dust on both human physiology and mechanical equipment is a pressing concern, as problems related to lunar dust during the Apollo missions have been well documented (J.R. Gaier, The Effects of Lunar Dust on EVA Systems During the Apollo Missions. 2005, NASA-Glenn Research Center. p. 65). While efforts were made to remove the dust before reentering the lunar module, via brushing of the suits or vacuuming, a significant amount of dust was returned to the spacecraft, causing various problems. For instance, astronaut Harrison Schmitt complained of hay fever effects caused by the dust, and the abrasive nature of the material was found to cause problems with various joints and seals of the spacecraft and suits. It is clear that, in order to avoid potential health and performance problems while on the lunar surface, the reactive properties of lunar dust must be quenched. It is likely that soil on the lunar surface is in an activated form, i.e. capable of producing oxygen-based radicals in a humidified air environment, due to constant exposure to meteorite impacts, UV radiation, and elements of the solar wind. An activated silica surface serves as a good example. An oxygen-based radical species arises from the breaking of Si-OSi bonds. This system is comparable to that expected for the lunar dust system due to the large amounts of agglutinic glass and silicate vapor deposits present in lunar soil. Unfortunately, exposure to the Earth s atmosphere has passivated the active species on lunar dust, leading to efforts to reactivate the dust in order to understand the true effects that will be experienced by astronauts and equipment on the moon. Electron spin resonance (ESR) spectroscopy is commonly used for the study of radical species, and has been used previously to study silicon- and oxygen-based radicals, as well as the hydroxyl radicals produced by these species in solution (V. Vallyathan, et al., Am. Rev. Respir. Dis. 138 (1988) 1213-1219). The size and cost of these instruments makes them unattractive for the monitoring of lunar dust activity. A more suitable technique is based on the change in fluorescence of a molecule upon reaction with a hydroxyl radical (or other radical species). Fluorescence instruments are much less costly and bulky than ESR spectrometers, and small fluorescence sensors for space missions have already been developed (F. Gao, et al., J. Biomed. Opt. 10 (2005) 054005). For the current fluorescence studies, the terephthalate molecule has been chosen for monitoring the production of hydroxyl radicals in solution. As shown in Scheme 1, the reaction between the non-fluorescent terephthalate molecule and a hydroxyl radical produces the highly-fluorescent 2-hydroxyterephthalate molecule

Assessing the Impact of Vertical Land Motion on Twentieth Century Global Mean Sea Level Estimates

Near-global and continuous measurements from satellite altimetry have provided accurate estimates of global mean sea level in the past two decades. Extending these estimates further into the past is a challenge using the historical tide gauge records. Not only is sampling nonuniform in both space and time, but tide gauges are also affected by vertical land motion (VLM) that creates a relative sea level change not representative of ocean variability. To allow for comparisons to the satellite altimetry estimated global mean sea level (GMSL), typically the tide gauges are corrected using glacial isostatic adjustment (GIA) models. This approach, however, does not correct other sources of VLM that remain in the tide gauge record. Here we compare Global Positioning System (GPS) VLM estimates at the tide gauge locations to VLM estimates from GIA models, and assess the influence of non-GIA-related VLM on GMSL estimates. We find that the tide gauges, on average, are experiencing positive VLM (i.e., uplift) after removing the known effect of GIA, resulting in an increase of 0.24 ± 0.08 mm yr−1 in GMSL trend estimates from 1900 to present when using GPS-based corrections. While this result is likely dependent on the subset of tide gauges used and the actual corrections used, it does suggest that non-GIA VLM plays a significant role in twentieth century estimates of GMSL. Given the relatively short GPS records used to obtain these VLM estimates, we also estimate the uncertainty in the GMSL trend that results from limited knowledge of non-GIA-related VLM