Gorgobad: reflections on a German-Australian family biography

This article continues the focus on German-Australian militarised modernities through the Second World War to the present day. It draws on the author’s own family history, beginning with the memories evoked by her grandparents’ house in northern Sydney, built between 1950 and 1953. Named ‘Gorgobad’, Persian for ‘place of the wolves’, it resonates with a family history that involves German colonial investments in post-First World War Iran, the global geopolitical upheavals of the Second World War, which drew her family into separate histories of refuge, British imprisonment and deportation and, finally, building a new home in Australia. The essay asks pertinent questions about the entanglement of hegemonic racialised orders in Europe with the very racialised orders of the grounds on which Gorgobad was built.     

Characterization of lime mortar additivated with crystallization modifiers

Additivating mortars with crystallization modifiers is a novel approach to mitigate salt crystallization damage in historic masonry. Once verified the effectiveness of crystallization modifiers in bulk solution, the next step consists in verifying whether: (i) modifiers are still effective when mixed in mortar and going through the carbonation process and (ii) modifiers alter any mortar properties which might limit their application. This research addresses these issues for sodium ferrocyanide and borax, modifiers for sodium chloride, and sodium sulfate, respectively. Several experimental techniques have been applied to elucidate these questions. The results show that the selected modifiers are still able to alter the salt crystallization after going through the carbonation process of the mortar. Besides, no major effects of the modifiers on the fresh and hardened mortar properties were observed. It can therefore be concluded that there are no restraints for the future use of these crystallization modifiers in restoration mortars.     

The left hand of the Enlightenment: truth,error, and integrity in Bayle and Kant*

Taking its cue from Hannah Arendt’s comment that ‘truth gets lost in the Enlightenment’ and Lessing’s parable of God’s ‘left hand’, this paper traces a historical shift in moral and religious thought: roughly from truth to sincerity. From traditional conceptions of conscience as conditional on the objective truth of its content, the paper moves on, via the Reformation and seventeenth-century Augustinian turn, to early modern debates on toleration and the ‘erring conscience’. It is argued that Pierre Bayle’s Commentaire Philosophique of 1686 can be read as a crucial catalogue for understanding the substitution of truth with sincerity (and error): so that not truth but truthfulness is considered to be essential for moral and religious justification. Moving from Bayle to Immanuel Kant, the paper then shows how many of the same questions rise in Kant’s late essay on theodicy, which is also an essay on sincerity or integrity, via the Book of Job. Through these two thinkers, various themes are connected: from conscience and sincerity to the problem of the conscientious persecutor. Finally, these themes of truth, error and integrity are linked to the modern debate on authenticity, and a framework is proposed for conceptualising these various shifts.     

Glass and glass production in the Oman peninsula in antiquity reconsidered – chemical and mineralogical investigation of sands

A batch of green‐ and amber‐coloured glass chunks and unguentaria dating from the first century CE was found in 2007 at Dibba al Hisn, a site on the Arabian Sea coast of the United Arab Emirates (UAE). Its elemental and isotopic composition revealed the glass to be of a previously unknown plant ash glass type, different from known contemporary Roman, Mesopotamian, and Indian glass. The Sr isotopic composition of the glass corresponds to locally available plants, pointing to the possible existence of a first‐century CE local glass production centre. To explore this possibility, sands from around the UAE were analysed to establish their suitability for glass making and correspondence with the Dibba finds. This paper presents the results of the elemental analysis of fourteen sands. The analysis, performed using inductively coupled plasma optical emission spectroscopy (ICP‐OES), revealed all sands to be rich in lime and alumina. X‐ray diffraction revealed the presence of calcite and other carbonate minerals, as well as antigorite and quartz. Comparison of the sand compositions to average first‐century CE non‐Roman glass found at Dibba showed them to be unsuitable as raw material for producing the glass of Dibba. The evidence thus identifies this glass batch as imported, contrary to what was suggested before. This paper also reviews the occurrence of thick‐walled unguentaria in the region.