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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/MC/1/173a" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from G. Butler, Office of Ordnance, to Dr. Peter Mark Roget, Secretary of the Royal Society </dc:title>
  <dc:description>Enclosing a copy of a report from Lt. Colonel Colby of the Corps of Royal Engineers, in relation to the Trigonometrical Survey of Ireland and General Mann, the Inspector General of Fortification. Butler specifically mentions the location of Lock [Lough] Foyle near Magilligan.
[Enclosure as a related record]. </dc:description>
  <dc:date>7 September 1829</dc:date>
</rdf:Description>