Population: action for a new decade

This 48-page supplement reports on the world popultion situation and on the International Conference on Population held in Mexico City in 1984. Included are summaries of Conference recommendations, the text of the Mexico City Declaration on Population and Development, a World Population Chart, and reports on population studies. The main task of the 1984 Population Conference was to review the 1974 World Population Plan of Action and approve steps to update some of its goals in line with new issues that have emerged in recent years. The preamble to the 1984 recommendations states that the basis for an effective solution to population problems is socioeconomic transformation. It is noted, however, that even in the absence of socioeconomic development, family planning programs can have an impact on fertility levels. This report futher describes the debate on disarmament, abortion, economic policy, and occupied territories that took place in Mexico City. Also included is a glossary of terms used in population studies and a discussion on how the United Nations determines its demographic projections.     

Cairo to Cape: The Spread of Metallurgy Through Eastern and Southern Africa

This article traces the beginnings of metallurgy in the eastern half of the African continent, focusing on three regions: (1) Egypt and Nubia; (2) the Great Lakes region of Central and East Africa; and (3) southern Africa. Metallurgy was not practiced much beyond the Nile valley until the first millennium BC, when copper, bronze and iron metallurgy began in Ethiopia and Eritrea, and iron metallurgy in the Great Lakes region. The expansion of agricultural societies carried iron metallurgy south, reaching its southern limit in South Africa by c. 300 cal AD. Copper was also smelted in southern Africa, but its use was restricted to pendants, bracelets, wire and other items of jewelry. In stark contrast to the metallurgical sequence in the Nile Valley, there was no production of tin, lead, gold or silver in central or southern Africa before these regions were linked to the Islamic world system after c. 800 AD.     

The red-stained flint crescent from Gesher: new insights into PPNA hafting technology

A red-stained flint crescent found in the Pre-Pottery Neolithic A (ca. 9000 BC) site of Gesher, Israel, provides us with a unique opportunity to study the hafting technology of a particular tool type in the Levant. We present here a reconstruction, based on chemical and mineralogical analyses, of the hafting technologies and materials employed in the process. Use will also be made of relevant studies of the archaeological record. Local material was used for the production of an elastic adhesive paste, mud plaster, which was then hardened to hold the crescent securely in the haft. The study contributes insight into the hafting technology that was most probably implemented in the production and maintenance of composite tools during the Early Neolithic period.     

The perineuronal net: a weapon for a challenge

Theories and data do not always fit and sometimes are sources of conflicts among scientists. This is the case of a morphological structure, the perineuronal net, which was denied on the basis of an ideological conflict between two giants of neurosciences: Camillo Golgi and Santiago Ramon y Cajal. The perineuronal net is a reticular structure enveloping many neurons. Orginally reported by Golgi in 1893 and 1898 and confirmed by several authors before the turn of the century, the perineuronal net was used by Golgi to support the reticular theory of the organization of the nervous system. Ramon y Cajal, the paladin of the neuronal theory who had also observed this anatomical structure, denied its existence suggesting that it was a fixation artifact. After Cajal's statements, only a few Italian scientists continued to work in this field, and after the 1930s the perineuronal net was forgotten. Only the recent advances in histochemical and immunocytochemical technology confirmed the existence of this structure opening new fields in functional neuroanatomy and neuropathology.     

The manufacture of Aurignacian split-based points: an experimental challenge

Hunting is one of the areas of human activity that sees the most significant changes in the period from 40 000–35 000 BP in Europe. In this respect, the Aurignacian technocomplex shows technical innovations, notably with the fabrication of split-based points (SBP) in antler and the mass production of bladelets, arguably to serve as weapon armatures. Yet, little experiment work has been dedicated to this question. To begin to fill this gap, we have designed an experimental program devoted to testing and assessing the design, manufacture and use of Aurignacian weaponry.     

清末新政时期八旗团体的参政活动

清末宪政改革期间,满汉矛盾尤为时人所关注,化除满汉畛域的呼声愈来愈高。裁旗撤防更引发了如何解决八旗生计问题。清政府为筹划八旗生计,特设立变通旗制处。由于旗制本身的种种束缚,加上旗制处大臣的因循敷衍,筹办生计措施进展甚缓。与此同时,部分八旗志士组织八旗宪政团体,发表演说,希冀以此唤醒沉沦的旗人,自立生存。八旗宪政团体的出现说明满人绝非既有认知中的保守颟顸形象。     

Underwater archaeological parks: a new perspective and a challenge for conservation—the Italian panorama

The conservation in situ of underwater archaeological heritage is a highly stimulating subject for both archaeologist and conservator as it permits planning and experimentation of new treatment methods opening up new possibilities for conservation, protection and scientific research. This paper offers some remarks on this subject and shows the experience of some Italian underwater archaeological parks.     

The North Atlantic Population Project: Progress and Prospects

The North Atlantic Population Project (NAPP) is a massive database of historical census microdata from European and North American countries. The backbone of the project is the unique collection of completely digitized censuses providing information on the entire enumerated populations of each country. In addition, for some countries, the NAPP includes sample data from surrounding census years. In this article, the authors provide a brief history of the project, describe their progress to data and plans for the future, and discuss some potential implications of this unique data resource for social and economic research.     

The challenge facing migration research: a case for greater awareness

The author critically examines an article by Keith Halfacree and Paul Boyle, in which the authors made a case for a biographical approach to migration research. "My point of contention--incredulous disbelief might be more accurate--stems from their conclusion that the biographical approach should be the ?new' methodological base for an improved paradigm in migration studies."