Cranial suture closure and its implications for age estimation

Three age estimation techniques using ectocranial and/or endocranial suture closure are tested on a sample of known age from Spitalfields, London in order to determine the value of cranial suture closure as an indicator of age at death. The three techniques are those proposed by Acsádi and Nemeskéri, Meindl and Lovejoy and Perizonius. Results indicate that the Acsádi and Nemeskéri technique, which is based on endocranial sutures, can be used to distinguish young and middle-aged individuals in the Spitalfields sample but gives no information for crania over the age of 50 years. Age estimation using the Meindl and Lovejoy and Perizonius (Old system) techniques, which use ectocranial sutures, was found to be subject to a number of complicating factors, of which sexual dimorphism in the rate and pattern of closure is the most significant. A method of estimating age at death based on both endocranial and ectocranial suture closure is developed on the basis of the Spitalfields sample. The technique attempts to overcome some of the problems associated with both intra- and interpopulation variation in cranial suture closure. For a truly accurate age-estimation technique based on cranial suture closure we would need to know more about the causes and functions of suture closure in human populations.     

L'expérience des nombres de Bernard Frenicle de Bessy

Through the discussion of a problem posed around 1639 by Bernard Frenicle de Bessy, its solution and the replies of his correspondents, we shall describe several overlapping registers of Frenicle's exprience: an experimentation on numbers partly borrowed from the natural sciences, the demands of a collective practice cemented together by problems and their explicit construction, a personal training in attention and savoir-faire. All these come together in Frenicle's efforts to contest the supremacy of algebraic analysis and in the modes of conviction which are at the base of his work. In return, this account of a mathematical and collective experiment allows us to appreciate the difficulties for Frenicle in transmitting his results and for his historians in reconstructing his activity.     

Putting the border in place: customs regulation in the making of the Irish border, 1921–1945

This paper explores the historical geography of the making of the Irish border through a focus on the practices of customs regulation through which it was constituted and on the impeded, permitted and concealed mobilities of people and objects across the customs boundary after 1923. It traces how legislative change at the level of the state – in this case the governments of the Irish Free State, Northern Ireland and the United Kingdom – was translated into the routine practices of those trying to regulate the movement of people and objects across the customs boundary, and considers the responses of those subject to, and regularly subverting, these efforts. Drawing on recent interests in the prosaic practices of the state, and in materiality and mobility more widely, our focus is both on the work of political power at the border through the practices, texts, tools and techniques of customs regulation, and on the experience and effects of customs control for those living near the newly defined line between Northern Ireland and the Irish Free State.