Single crystal X-ray diffraction patterns reveal that the structure of selected anauxite crystals is the same as the structure of macroscopic kaolinite crystals. Anauxite and kaolinite crystals are intergrowths on a domain scale of units in pseudotwin orientations. Individual domains in anauxite have the triclinic geometry of kaolinite, and give X-ray reflections that compare closely in intensity with those calculated from the atomic parameters of kaolinite. Large crushed crystals of anauxite give powder patterns identical with that of kaolinite. Because it has been shown recently that the chemical composition of anauxite is also identical with that of kaolinite, it is recommended that the term “anauxite” no longer be used.

Gerberga of Saxony, the sister of Otto I of Germany and wife of Louis IV of France, receives frequent scholarly mention in relation to a treatise by Adso of Montier-en-Der circa 950–954. The topic of this short work, presented as a letter to Gerberga in answer to a question she posed to the monk, was the life of the Antichrist, that fearful servant of Satan who would appear before Christ's Second Coming, lead whole nations into damnable error, and kill many who would not apostatize before being defeated by Jesus himself at his return. The treatise eventually become the foundation of centuries of Christian apocalyptic thought. But despite her prominence in the letter, Gerberga has received no sustained examination by historians regarding her interest and promotion of apocalyptic thought beyond being a recipient of Adso's letter. At most, scholars tend to see Gerberga as if through the eyes of Adso, that is, as a nervous queen anxious to be reassured that a universal evil is not hiding just around the corner. Such views—wholly unintentional but nevertheless present—do her a great disservice and misunderstand the motivations of both Gerberga and Adso present in the letter, as well as Gerberga's younger, apocalyptically minded in-law, the empress Adelaide. This essay examines Gerberga's life not simply as it relates to Adso's work but in relation to the very personal, family-driven politics of both East and West Francia in the tenth century. When placed in her proper context, we find Gerberga was not merely a passive recipient of apocalyptic ideas for a brief period in the early 950s but was an active patron whose interest shaped imperial politics for generations.

Anaemia is characterised by low hemoglobin (Hb) concentration. Despite being a public health concern in Ethiopia, the role of micronutrients and non-nutritional factors as a determinant of Hb concentrations has been inadequately explored. This study focused on the assessment of serum micronutrient and Hb concentrations and a range of non-nutritional factors, to evaluate their associations with the risk of anaemia among the Ethiopian population (n 2046). It also explored the mediation effect of Zn on the relation between se and Hb. Bivariate and multivariate regression analyses were performed to identify the relationship between serum micronutrients concentration, inflammation biomarkers, nutritional status, presence of parasitic infection and socio-demographic factors with Hb concentration (n 2046). Sobel–Goodman test was applied to investigate the mediation of Zn on relations between serum se and Hb. In total, 18·6 % of participants were anaemic, 5·8 % had iron deficiency (ID), 2·6 % had ID anaemia and 0·6 % had tissue ID. Younger age, household head illiteracy and low serum concentrations of ferritin, Co, Cu and folate were associated with anaemia. Serum se had an indirect effect that was mediated by Zn, with a significant effect of se on Zn (P < 0·001) and Zn on Hb (P < 0·001). The findings of this study suggest the need for designing a multi-sectorial intervention to address anaemia based on demographic group.