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.

Date:

[1722]