Navigation New Modelled, Or, A Treatise of Geometrical, Trigonometrical, Arithmetical, Instrumental, and Practical Navigation: Teaching how to Keep a Reckoning, Both in Latitude and Longitude, Without Tables Or Instruments, by a New Method Never Yet Published : Illustrated with Practical Examples of Keeping a Journal and Correcting it by an Observation, with a New Way of Finding the Variation and Time of High-water at Any Known Port : Together with All Necessary Tables, Calculated to the New Stile, and the Projection of the Sphere, Orthographic and Stereographic : Also Current Sailing, with Other Pleasant Questions, and how to Correct the Longitude by a Solar Observation