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A reply to Mr. Wilson's answer to my letter to Dr. Halley. Containing an answer to his challenge; with a farther vindication of the Mercator's-Chart, against his false insinuations and aspersions. A Demonstration of the Falsity of his blustering Title-Page: And, an Offer to the said Wilson to meet him before the Royal-Society, in order fairly to try with Him, in the Presence of that Illustrious Body, by Way of Experiment, which is the most Excellent Invention, the Mercator's, or the Globular-Chart. Where, by another Experiment, I propose to prove (if he will not fail to meet me) that the Globular Projection must necessarily in many Cases deceive the Industrious Mariner, Twenty in Forty, if measured by one and the same Scale of Equal-Parts, according to his Proposals. To which is prefixed, a second letter to Dr. Halley. By Thomas Haselden, late Teacher of the Mathematicks to His Majesty's Volunteers in the Royal Navy.
Haselden, Thomas, -1740.Date: [1722]- Books
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The description and use of that most excellent invention commonly call'd mercator's chart; with some observations, useful for the better understanding the nature thereof: to which is added the description of a new scale, whereby Distances on a given Course may be Measured, or Laid Off, at One Extent of a Pair of Compasses; which renders this Chart as Easy in Practice as the Plain Chart: Also a Letter to Dr. Halley, concerning the Globular Chart. By Thomas Haselden; Late Teacher of the Mathematicks, to his Majesty's-Volunteers, in the Royal Navy.
Haselden, Thomas, -1740.Date: 1722