This paper is the first in a series summarizing, for the benefit of historians and archaeologists from other areas, the latest developments in radiocarbon dating for the later prehistory of western and northern Africa. These articles will appear every two years, alternating with similar surveys of eastern and southern Africa. A selection of more than 200 dates from those not previously published in this Journal is discussed, and dates obtained by thermoluminescence are quoted for the first time. It should be emphasized that most of the dates included are published in advance of full reports which are being prepared by the archaeologists concerned. The conclusions reached are therefore provisional and may well require modification in the light of a fuller examination of the related archaeological data.

Perhaps the weakest aspect of oral tradition is its inability to establish and maintain an accurate assessment of the length of the past it purports to relate. As time passes, societies without calendrical systems tend to become either very vague about this time depth or to relate it to present, changing circumstances. The most common method of measuring the past in many societies is in terms of king lists or genealogies. A comparison of orally transmitted king lists and genealogies in various places and times, for example, the early Mediterranean world and the Ancient Near East, the native states of India, Africa and Oceania, indicates that certain patterns of chronological distortion seem to emerge, sometimes telescoping but more often lengthening the past.

The former may occur through omission of usurpers, however defined, periods of chaos or foreign domination, or by the personification of an entire epoch by a founding folk-hero. If the reasons for artificial lengthening are obvious, the mechanisms are less so. In this respect a survey of both welldocumented cases and of orally transmitted lists can be instructive. Lengthening is often the result of euhemerism; more often subtler themes emerge. These include longer reigns in the earlier, less known period, the arranging of contemporary rulers as successive ones and, most importantly, extended father/son succession throughout the list or genealogy. This last is of direct and profound chronological importance, and its occurrence is widespread enough to be termed stereotypical. Yet it is not often recognized as aberrant, even though its documented occurrence is exceedingly rare. The consequent equation of reigns with generations will almost always result in an exaggerated conception of the antiquity of the beginning of the genealogy. Other weaknesses of orally transmitted king lists include lack of multiple reigns and dynastic changes, and suspiciously perfect rotational succession systems.

Within its scope this article only attempts to hint at the origin, shape and effects of these distortions. Its main thesis is that much light can be cast on African cases of this nature through a comparative analysis drawing from a whole range of societies and sources.

In the Islamic history of tropical Africa, prayer has often played an important, sometimes even a decisive, part. The functions of prayer may be ceremonial, instrumental (directed to the achievement of specific objectives), and disciplinary. In the military context the two latter are particularly significant. The discipline of Muslim prayer is strict, and has sometimes underpinned military discipline.

From the mid-seventeenth century until 1861, the Shilluk, notoriously successful raiders, dominated the White Nile. Their population was largely concentrated in the riverain strip which is Shilluk-land today, yet they had undisputed control of the river down to Eleis, and raided as far north as the confluence with the Blue Nile. This ascendancy was based upon the canoe: the characteristic Shilluk tactic was the surprise mass canoe-raid upon herds or villages within striking distance of the river bank. Before the advent of Turco-Egyptian sailing ships, Shilluk canoes were the only really navigable craft on the White Nile. Another important Shilluk asset was the manpower provided by their comparatively high numbers. Most raids were carried out independently of the Shilluk king. The raiding pattern was probably established before the development of the Shilluk ‘divine’ kingship.

From 1820 the Shilluk became more closely involved with the Muslim Sudan. It seems that the beginning of the ivory boom led Kordofan djellabas to open regular trade with the Shilluk. And in ever-increasing numbers, Muslim refugees from Turkish officialdom migrated into Shilluk territory. Trade between Shilluk and Muslim was largely confined to the settlement of Kaka. Its most profitable sector, the ivory trade, was governed by a strict royal monopoly, the maintenance of which gives some proof of the Shilluk king's authority. Wealth thus gained may have led to a short-lived increase in royal power. The mass of the Shilluk were unable to develop any economic alternative to the traditional raids, which continued unabated. In a new raiding pattern, Shilluk of the Kaka region joined Muslim immigrants in raids on the Dinka. Once Kaka had become a slave-market, slave raiding was probably the essential aim of these joint expeditions. Tensions between Shilluk and immigrant traders precipitated a crisis in 1860–1.

About 1867 Fulbe living in the Mandingo kingdoms of Tomani and Jimara on the south bank of the Gambia river revolted against their Mandingo landlords. Under their leader, Alfa Molo, the Fulbe went on to destroy the decadent Mandingo state system over much of the Gambia's south bank, and south into Portuguese Guinea, in one of the few determinative conquests in Gambia history. A new state emerged from this revolution which was based on the political dissatisfactions and ethnic consciousness of the Fulbe, its institutions moulded by the political skills and vigorous personality of Alfa's son, Musa Molo. Before 1867, the Fulbe living in the Gambia region were politically highly fragmented, having no tradition of centralized authority. Their dealings with other groups, both stranger and Fulbe, were highly particularized and characterized generally by either accommodation or flight.

When the Royal Niger Company attempted to establish its authority in the Asaba hinterland in the 1880s, the existing town societies in the area provided the foundations of a resistance movement which became known as the Ekumeku. In 1900 the area came under the direct administration of the British government. British rule led to regulations against aspects of the people's religious and political practices and to the establishment of native courts, and provided a shelter under which missionary activities flourished. All these were considered by the people as inimical to their traditional way of life. This situation provoked a consolidation of the Ekumeku forces and galvanized the movement into action. Between 1902 and 1910 the Ekumeku offered a courageous and prolonged resistance to British rule in the Asaba hinterland.

In spite of this enduring consistency in opposing the establishment of European rule, the Ekumeku movement was not investigated along relevant lines primarily because it was much misunderstood in official circles, which took its external manifestations for its essence. This paper attempts, from oral and written sources, a study of the actual nature of the Ekumeku as a resistance movement, its organization, its responses to the challenges posed by European encroachment on the Asaba hinterland and its sources of strength which gave it its resilience.

In addition to administrative measures, legal enactments, special town laws and prosecution in the native courts, it is shown that the colonial administration relied heavily on the use of armed force to destroy the movement.

This article attempts to assess more precisely the role of the Seventh Day Baptist movement in nothern Nyasaland as a case study in African reactions to missions and to colonial rule. Internal factors contributing to the establishment of the movement included an intense desire among Africans to acquire a western education apart from European missionary control, and the competent leadership provided by Charles Domingo. External factors included the influence of Joseph Booth and the pattern of labour migration from Nyasaland to southern Africa.