Explanations and answers to objections to William Titford's chart for finding longitude, 1819-10
Scope and Contents
Concerning a chart for finding longitude and a method of finding longitude by two proportional quadrants. Includes a letter of recommendation from the passengers and crew of HMS York where Titford's chart for longitude was tested on a voyage to Jamaica in 1813, as well as latitude and longitude figures from a voyage of HMS Mary Ann to Jamaica in 1822.
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2 folio(s) (2 ff.) : Paper
Language of Materials
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