<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><dc:title>91. Navigational textbook</dc:title><dc:creator>Thistlewood, Thomas, 1721-1786</dc:creator><dc:date>[1750s]</dc:date><dc:language>eng</dc:language><dc:description>Manuscript textbook, in a single scribal hand, containing various problem sets relating to charting courses, methods of sailing, measurement and gauging, and geometry

Laid in: autograph letter signed from John Carter to J. S. Padley, Horncastle, 1853 November 22. Concerns the ownership of the Thistlewood papers. 

Enclosure: autograph letter signed from J. F. Wray to an unidentified recipient, 1852 February 9</dc:description></oai_dc:dc>