The description and use of that most excellent invention, call'd the globular chart: Shewing its Agreeableness to the Globe, And the Natural and Easy Consequences thereof in the Practice of Navigation; with a specimen of a sea-chart in that projection; and trigonometrical calculations, to prove the Truth thereof, both in Course, Latitude, Longitude, Meridian Distance (or Departure) Distance in the Arch of a great Circle, and Distance in the Rumb, tho' so Extensive as to exceed 1200 Leagues; and all measur'd by a Scale of Equal Parts, which cannot be done upon any Projection but this only. To which is prefix'd an answer to Mr Haselden's letter to Dr. Halley, Proving by Mathematical Demonstration, that his Principal Argument is false by above Three in Five; the rest invalid, and the whole incoherent. With an appendix, containing an answer to Mr. Collier, and proving that these two Authors contradict themselves, and one another. By Henry Wilson, Late Mathematician in His Majesty's Navy, and Author of several Treatises, in Navigation, Astronomy, &c [electronic resource].