Characterization of vascular cavity coatings and microscopic tube-shaped structures from Upper Cretaceous dinosaur bone: evidence of a bacterial origin for dinosaur blood vessels""

Recent claims of blood vessels extracted from dinosaur fossils challenge classical views of soft-tissue preservation. Alternatively, these structures may represent postdepositional,diagenetic biofilms that grew on vascular cavity surfaces within the fossil. Similar red, hollow, tube-shaped structures were recovered from well-preserved and poorly-preserved (abraded, desiccated, exposed) Upper Cretaceous dinosaur fossils in this study. Integration of light microscopy, scanning electron microscopy, and energy dispersive x-ray spectroscopy was used to compare these vessel structures to the fossils from which they are derived. Vessel structures are typically 100-400 μm long, 0.5-1.5 μm thick, 10-40 μm in diameter and take on a wide range of straight, curved, andbranching morphologies. Interior surfaces vary from smooth to globular and typically contain spheres, rods, and fibrous structures (< 2 μm in diameter) incorporated into the surface. Exterior surfaces exhibit 2-μm-tall converging ridges, spaced 1-3 μm apart, that are sub-parallel to the long axis of the vessel structure. Fossil vascular cavities are typically coated with a smooth or grainy orange layer that shows a wide range of textures including smooth, globular, rough, ropy, and combinations thereof. Coatings tend to overlay secondary mineral crystals and framboids, confirming they are not primary structures of the fossil. For some cavity coatings, the surface that had been in contact with the bone exhibits a ridged texture, similar to that of vessel structures, having formed as a mold of the intravascular bone surface. Thus, vessel structures are interpreted as intact cavity coatings isolated after the fossil is demineralized. The presence of framboids and structures consistent in size and shape with bacteria cells, the abundance of iron in cavity coatings, and the growth of biofilms directly from the fossil that resemble respective cavity coatings support the hypothesis that vessel structures result from ironconsuming bacteria that form biofilms on the intravascular bone surfaces of fossil dinosaur bone. This also accounts for microstructures resembling osteocytes as some fossil lacunae are filled with the same iron oxide that comprises vessel structures andcoatings. Results of this study show that systematic, high-resolution SEM analyses of vertebrate fossils can provide improved insight on microtaphonomic processes, including the role of bacteria in diagenesis. These results conflict with earlier claims of dinosaurblood vessels and osteocytes.

Drinking, Family Relations and Authority in Early Modern Germany

The ideal of orderly family life in early modern Germany did not exclude drinking. In fact, drinks shared at the family table were closely tied to early modern notions of the marital bond and were also a necessary component of normal work relations. Drinking became a problem only when it threatened the stability of the household. The amount of alcohol involved in such cases might be as little as one drink if the circumstances were unsuitable. On the other hand, drinking that would by our standards be viewed as excessive or chronic could be considered acceptable . Even during and immediately after the period of Reformation, when polemical and prescriptive literature addressing the household was dominated by the problem of sin, drunkenness was rarely treated as a spiritual issues. The primary concern of both authorities and populace was not to protect the health or the rights of individuals but to protect the sanctity of the household and the stability of the community.

Public Drinking in the Early Modern World: Voices from the Tavern, 1500-1800

Until recently the role of the public drinking house has been approached from elitist, folkloric and anecdotal perspectives. The work of a new generation of social historians, however, has raised the tavern’s profile in the academic consciousness and confirmed its position within the mainstream of social and cultural history. It is now recognized that an understanding of the centrality of public drinking to the development of both elite and popular culture is vital to studies of social behaviour. The study of taverns has also been at the forefront of emerging interest in the history of consumption and material culture, and has contributed to a richer understanding of economic history. Constructions of gender and identity are also visible through research into the patterns of behaviour and discourse in and around the public house. This four-volume reset edition presents a wide-ranging collection of primary sources which uncover the language and behaviour of local and state authorities, of peasants and town-dwellers, and of drinking companions and irate wives. The documents are translated and set in their social and historical context, providing a multidisciplinary collection that will be of great importance to scholars of all areas of social and cultural history of the early modern period. The vast majority of this material is published here for the first time, ensuring that the collection will open up new avenues of research. Volume 1 draws heavily from the Parisian police archives and includes inspectors’ reports, complaints by the general public and details of court cases to build a picture of drinking in early modern France. Volumes 2 and 3 address public drinking in the Holy Roman Empire through a variety of chronicles, civic ordinances, court records, travel reports and surveys of public houses. Volume 4 locates taverns within a broader analysis of America’s public houses, drawing on visual material as well as journal entries, business reports and newspaper articles. Each volume is accompanied by editorial introductions and is annotated to provide readers with a high-quality resource of scholarly material.