4500-Year old domesticated pearl millet (Pennisetum glaucum) from the Tilemsi Valley,Mali: new insights into an alternative cereal domestication pathway

We report here new evidence from the Lower Tilemsi Valley in northeastern Mali, which constitutes the earliest archaeobotanical evidence for domesticated pearl millet (Pennisetum glaucum), predating other finds from Africa or India by several centuries. These materials provide further morphological details on the earliest cultivated pearl millet. Our results demonstrate that pearl millet non-shattering evolved earlier than the start of grain size increases and that once domesticated, pearl millet spread widely and rapidly. Additional attention is given to the dating of these materials, highlighting potential flaws in the use of organic chaff tempered pottery to date occurrences of pearl millet. A revised chronology, based on detailed Bayesian modelling, is presented for the Lower Tilemsi region.     

Transition From Wild to Domesticated Pearl Millet (Pennisetum glaucum) Revealed in Ceramic Temper at Three Middle Holocene Sites in Northern Mali

Imprints of domesticated pearl millet (Pennisetum glaucum (L.) R. Br.) spikelets, observed as temper in ceramics dating to the third millennium BC, provide the earliest evidence for the cultivation and domestication process of this crop in northern Mali. Additional sherds from the same region dating to the fifth and fourth millennium BC were examined and found to have pearl millet chaff with wild morphologies. In addition to studying sherds by stereomicroscopy and subjecting surface casts to scanning electron microscopy (SEM), we also deployed X-ray microcomputed tomography (microCT) on eleven sherds. This significantly augmented the total dataset of archaeological pearl millet chaff remains from which to document the use of the wild pearl millet as ceramic temper and the evolution of its morphology over time. Grain sizes were also estimated from spikelets preserved in the ceramics. Altogether, we are now able to chart the evolution of domesticated pearl millet in western Africa using three characteristics: the evolution of nonshattering stalked involucres; the appearance of multiple spikelet involucres, usually paired spikelets; and the increase in grain size. By the fourth millennium BC, average grain breadth had increased by 28%, although spikelet features otherwise resemble the wild type. In the third millennium BC, the average width of seeds is 38% greater than that of wild seeds, while other qualitative features of domestication are indicated by the presence of paired spikelets and the appearance of nondehiscent, stalked involucres. Nonshattering spikelets had probably become fixed by around 2000 BC, while increases in average grain size continued into the second millennium BC. These data now provide a robust sequence for the morphological evolution of domesticated pearl millet, the first indigenous crop domesticated in western Africa.

     

Quo Vadis,Social Theory?

John R. Hall, Cultures of Inquiry: From Epistemology to Discourse in Sociohistorical Research     

Institutionalising Future Geographies of Financial Inclusion: National Legitimacy Versus Local Autonomy in the British Credit Union Movement

In Great Britain, financial infrastructure withdrawal and community economic decline have focused attention on the capacity of locally "alternative" financial institutions to combat social and financial exclusion. This paper examines one such institution, the residential or "community" credit union, which provides a low-cost source of credit for members drawn from a common bond area usually based upon place of residence and/or work. Although community credit unions have traditionally been seen as providing individuals and communities with the opportunity to access credit and savings facilities in areas where there has been contraction in bank and building society provision (the financial "mainstream"), ongoing attempts exist to move away from the traditional role of community credit unions. This transition has set up three main challenges for the British credit union movement, discussed in this paper as follows: (1) a struggle over the attempt to redefine the "model" credit union within the national credit union movement; (2) the changing regulatory context for credit union development, including attempts to embrace credit unions within New Labour policies on social exclusion; and (3) a "local" challenge, including the incorporation of credit unions into community economic development initiatives. The paper considers how these challenges feed into wider understandings about the social relations, categorisation and autonomy of locally "alternative" financial institutions. We argue that future research on geographies of financial inclusion focusing on "alternative" institutions and their relationship to the financial mainstream needs to pay close critical attention to potential contradictions and tensions operating at different, yet intersecting spatial scales.     

Agricultural Origins and Frontiers in South Asia: A Working Synthesis

The accumulation of recent data from archaeobotany, archaeozoology and Neolithic excavations from across South Asia warrants a new overview of early agriculture in the subcontinent. This paper attempts a synthesis of these data while recommending further systematic work and methodological developments. The evidence for origins and dispersals of important crops and livestock from Southwest Asia into South Asia is reviewed. In addition evidence for indigenous plant and animal domestication in India is presented. Evidence for probable indigenous agricultural developments in Gujarat, the Middle Ganges, Eastern India, and Southern India are reviewed. An attempt is made to highlight regions of important frontiers of interaction between early farmers and hunter-gatherers. The current evidence suggests that the Neolithic trajectories in different parts of South Asia differ from each other. Indigenous centers of plant domestication in India also differ from the often discussed trajectory of Southwest Asia, while suggesting some similarities with agricultural origins in Africa and Eastern North America as well as secondary agricultural developments on the peripheries of Eurasia. An erratum to this article can be found at     

Diversification,Intensification and Specialization: Changing Land Use in Western Africa from 1800 BC to AD 1500

Journal of World Prehistory - Many societal and environmental changes occurred between the 2nd millennium BC and the middle of the 2nd millennium AD in western Africa. Key amongst these were...     

A Roman Skeleton with Possible Treponematosis in the North‐East of the Iberian Peninsula: A Morphological and Radiological Study

The main goal of this paper is to describe and discuss pathological lesions observed in a Roman skeleton (between 2^nd and 3^rd century AD) from the north‐east region of the Iberian Peninsula (St Nicasi 18–24 site. Gavà, Barcelona), which may be compatible with treponematosis. Most of the skeleton, with the exception of the neurocranium, was recovered. Only the left tibia was affected, whereas the rest of the recovered skeletal remains were unaffected. Macroscopic examination revealed a male individual between 25 and 30 years of age at death with a sabre‐shaped left tibia. The proximal half of the diaphysis was pitted and the bone overall enlarged. The surface of the tibia showed occasional vascular impressions where, in some instances, small raised plaques of new bone appeared to bridge over them, specifically in the most affected area of the proximal half of the tibia. No destructive lesions were observed. Radiographic examination and gross inspection at the cross section of the tibia showed encroachment into the medullary cavity of coarse cancellous bone and cancellization of the cortex. The observed lesions indicate that the tibia was affected by a chronic infectious disease. Differential diagnoses were considered, and these included other infectious diseases, fibrous dysplasia, Paget's disease, chronic varicose ulcers affecting bone and trauma, with the conclusion that the disease affecting the tibia could have been treponematosis. This could be significant in the history of the treponematoses being one of the oldest examples of treponematosis in pre‐Columbian Europe. Copyright © 2011 John Wiley & Sons, Ltd.     

Organic Public Geographies: “Making the Connection”

Abstract: A new field of “public geographies” is taking shape ( Fuller 2008 ) in geography's mainstream journals. While much is “traditional”, with intellectuals disseminating academic research via non‐ academic outlets ( Castree 2006 ; Mitchell 2008 ; Oslender 2007 ), less visible is the “organic” work and its “more involved intellectualizing, pursued through working with area‐based or single‐interest groups, in which the process itself may be the outcome” ( Ward 2006 :499; see Fuller and Askins 2010 ). A number of well‐known projects exist where research has been “done not merely for the people we write about but with them” ( Gregory 2005 :188; see also Cahill 2004 ; Johnston and Pratt 2010 ). However, collaborative writing of academic publications which gives research participants authorial credit is unusual ( mrs kinpainsby 2008 ; although see Sangtin Writers and Nagar 2006 ). This paper is about an organic public geographies project called “Making the connection”. It is written by a diverse collection of (non‐)academic participants who contributed to the project before it had started, as it was undertaken, and/or after it had finished. This is a “messy”, process‐oriented text ( Cook et al. 2007 ) working through the threads (partially) connecting the activities of its main collaborators, including a referee who helped get the paper to publication.