During the Napoleonic Wars there was a shortage of suitable millstones for the British Ordnance gunpowder mills. John MacCulloch spent five summers searching Western Britain for a source of non-siliceous limestones to be used as gunpowder millstones. His search was authorized by the Board of Ordnance, which also paid all his expenses.By 1812 MacCulloch had found suitable limestones in Sutherland, Skye, and at Glen Tilt, but the Board of Ordnance were unable to exploit any of the sources until (...) 1815 when unsuccessful quarries were opened on Skye. After the defeat of Napoleon at Waterloo the British millstone project was abandoned. The military objective of the millstone survey was not achieved, but MacCulloch learned much about the geology of the older rocks of Britain and he built a reputation as an expert geologist through the papers he submitted to the Geological Society of London. (shrink)

During the late eighteenth and early nineteenth centuries antiquarians, geologists and savants debated whether the summits of particular Highland mountains were the vestiges of iron-age forts or evidence of extinct volcanoes. A blend of antiquarian-historical methodology deeply affected the geological narratives that British savants and gentlemen of science developed during this period. The histories of architecture, and the fine and practical arts regularly functioned as proxies for visualizing the history, structure and operations of the earth. The case of vitrified forts (...) discovered in Scotland highlights how the theoretical and practical arts directly informed geological theory to create what George Bellas Greenough claimed was a ‘philosophical pursuit’. Focusing on the contributions of John MacCulloch over the ambiguous identification of vitrified ruins, this paper shows how geological history was entwined with broad cultural interests in the progress of society and its rise from Nature. First, the essay examines the meaning and role of ‘imitation’ and ‘copying’ in art and architecture. Second, it applies these concepts within the framework of the vitrified-ruin debate that antiquarians and geologists engaged. Third, it demonstrates how the ‘imitation’ of Nature in the practical arts was a useful tool for making claims about earth structure. (shrink)

Re-examination of the manuscript of John Farey's unpublished mineral survey of south-east Sutherland, together with his published opinions on the significance of fossils from the Brora Coalfield and his interpretation of the stratigraphy of that coalfield, leaves no doubt that, contrary to the accepted view, Farey did not recognise the Mesozoic age of the Brora Coalfield but thought of it as Carboniferous. Farey was a Smithian geologist, and the difficulty he had in interpreting unfamiliar evidence from Brora illustrates the difficulties (...) experienced by bio-stratigraphers in the 1810s when fossil ranges were imperfectly understood. Evidence is presented which suggests that the first geologist to recognise the Mesozoic age of the Brora beds may have been John MacCulloch. (shrink)