Les horizons géographiques,entre continu et discontinu1

This article analyses the metaphor of education and politics, commonly referred to as the allegory of Plato's cave. It develops the geographic concept of the horizon of novelty and otherness as a ‘dialectic’ of continuity and discontinuity, as well as an articulation between human mobility and immobility. In return, it poses the question of horizontality, always shown but never stated, as a critique of a metaphor crushed by the verticality that institutes the political connection, not in relation to the other but as a transcendence, and bases human education on the crushing of emotion. Beyond these readings, Plato's text allows the articulation of philosophy and geography in a common ‘logos’ and thus constitutes not only one of the foundations of an anthropological approach to geography but also one of the bases of the Western world and Western thought.     

Obsidian provenance studies in Colombia and Ecuador: obsidian sources revisited

The field occurrences, elemental compositions and formation ages of Colombian and Ecuadorian obsidians are revisited. It is shown that the regional sources of this raw material are linked to two major volcanic structures: the Chacana and the Paletara calderas, localised on the eastern cordillera of Ecuador and on the central Andean cordillera of south Colombia respectively. Seventy-two samples were analysed by inductively coupled plasma-atomic emission spectroscopy (ICP-AES), inductively coupled plasma-mass spectrometry (ICP-MS) and/or particle induced X-ray emission (PIXE). The same 10 types of elemental compositions were identified independently from ICP and PIXE. Four of these types were previously unknown. The formation ages of these obsidians previously determined by fission tracks dating are in the range 0.17–1.58 Ma at Chacana and 3.46–4.27 Ma at Paletara. Most Colombian and Ecuadorian pre-Hispanic artefacts present elemental compositions compatible with a Chacana- or Paletara-derived origin of the raw material. However, some of them present fission track ages discordant with the present-day known obsidian occurrences, which implies that the regional source inventory is not yet exhaustive.     

Culture <Emphasis Type="Italic">Versus</Emphasis> Civilisation la Genèse D’une Opposition

Closely linked to the concept of history, the notion of culture becomes a collective singular during the last third of the xviii ^th century. The German idea of culture did not immediately come into opposition with the notion of civilization and both terms were for a long time almost identical in meaning. What does the polemical orientation of the German notion of culture reveal from 1880–1890? First, the crumbling of the idealistic neo-kantian pattern of self-determined cultivated person as an end in itself (the so-called Selbstbildung); second, the growing moral condemnation of the empty spirit of the time. This double process reaches its apogee full of hatred during World War I.     

La fabrique de la perpétuité

TheTrésor des chartes is probably one of the best preserved single collection of archives of the ancient French monarchy. Paradoxically, however, it was never part of a central record office in the modern sense. This large and confused mass of documentation slowly emerged as a records collection during the XIII^th century. Although it seemed to follow the construction of a State administration, it was already inactive by the middle of the XIV^th century. Its records and charters, prestigious and inaccessible, were kept in the Sainte-Chapelle of Paris, close to the relics of the Passion bought by Louis the Ninth. As a record of the past it played a crucial role in the social construction of a notion of «perpetuity» suitable to the domanial and dynastic ideals of the monarchy. The ambiguities of this medieval heritage became obvious in the early modern period. Although there were a large number of inventories and classifications of theTrésor des chartes, it was never able to incorporate the other State records. The Republic inherited a majestic sanctuary which can certainly be described as a piece of shared memory, but which is unable to summarize the genesis of the Nation.     

Pre-Columbian congenital syphilis from the late antiquity in France

Today, exactly 500 years after the discovery of America, there is still a lot of controversy about the history of syphilis in Europe, especially about the Columbian and pre-Columbian hypotheses. This paper presents evidence for the presence of venereal treponematosis in the late Antiquity in France. The case that we examined comes from the necropolis of Costebelle (3rd-5th centuries AD; Hyères, Var, France). Grave no. 1 contained the well-preserved skeleton of a relatively old woman with the skeletal remains of an approximately 7-month-old fetus in her pelvic cavity. The osseous lesions of the fetal remains can be described in four groups: periosteal appositions on the skull vault (frontal and parietal); signs of periostitis on the long bones (bilateral cortical irregularities, predominantly on the left side, which affect first of all tibiae, femora, fibulae, radii and humeri, particularly in the metaphyseal region); some infraperiosteal detachment reminiscent of an infraperiosteal haematoma surrounding the distal extremity of the left forearm and the left hand; and finally, the irregular lesions of the humeral distal and proximal tibial metaphyses reminded us radiologically of Wimberger's signs. The most probable diagnosis of all the lesions mentioned above is that of a precocious congenital syphilis. This case consists of an argument against the epidemiological theories about the migration of Treponema pallidum from the New World back to the Old World starting at the end of the 15th century.