東国地域の家形石棺をめぐって(考古学部会,平成一七年度早稲田大学史学会大会報告)

Ruffia patagonica, a new genus and species of phreatogammarid amphipod, is described from a coastal cave on Madre de Dios Island (Chilean Patagonia). This is the first record of the family outside continental waters of New Zealand and New Caledonia. The new taxon displays some of the more distinctive features of the family, such as gnathopods with the palm margin lined with numerous unicuspid robust setae and with a denticulated inner margin of the dactylus; fifth pereiopod clearly smaller than pereiopod six and seven; "coxal gill" ( =  exopod) absent from the seventh pereiopod; oöstegites broadened; urosomites with posterodorsal robust setae; and third uropod equiramous with an elongated peduncle and with unsegmented cylindrical rami, the latter provided with numerous robust setae. In addition, the sternites of all pereionites, pleonites, and urosomites show a portion of integument delimited by hyaline frill that is presumably osmoregulatory in function, and is equivalent to the pair of sternal gills displayed by other phreatogammarids on several body somites. The new genus is unique among phreatogammarids in displaying sexual dimorphism in the third epimeral plate, in the protopod of the third pleopod, in the armature of the first uropod, and in the endopod of the second uropod. Even though Phreatogammaridae have been suggested to be related to the broadly distributed marine family, Melphidippidae, their restriction to continental waters of former Notogean territories points to vicariance by plate tectonics of a non-marine ancestor rather than to dispersal as the main mechanism leading to their current distribution pattern

What Is an Act of Engagement? Between the Social, Collegial and Institutional Protocols

Engagement is not synonymous with commitment, even though both words are used in translations between English, French, and German. However, engagement is also not some supplementary phenomenon or a technical term that the phrase social acts already includes in itself or that the concepts of ‘commitment’ or ‘joint commitment’ somehow necessarily imply. In this article I would like to describe a special kind of social act and determine the function they have in relation between various agents. Most importantly, I would like to define their significance in the transformation of a group into an institution or higher order entity. My premise is that there are acts whose aim is to engage all others, since they refer to all of us together, and in so doing reduce negative (social) “acts” as well as various asocial behaviors within a group or institution. In this sense, engaged acts could alternatively also belong to a kind of institutional act, since they introduce certain adjustments to the institution, changing or modifying its rules, increasing its consistency and efficiency.First book series in Philosophy of the Social Sciences that specifically focuses on Philosophy of Sociality and Social Ontology. Studies in the Philosophy of Sociality Volume 1

Les exploitations minières de haute Ariège et leuir milieu anthropique. La mine de fer de Rancié

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