A tutor to astronomie and geographie, or, An easie and speedy way to know the use of both the globes, coelestial and terrestrial in six books : the first teaching the rudiments of astronomy and geography, the 2. shewing by the globes the solution of astronomical & geographical probl., the 3. shewing by the globes the solution of problems in navigation, the 4. shewing by the globes the solution of astrological problemes, the 5. shewing by the globes the solution of gnomonical problemes, the 6. shewing by the globes the solution of of [sic] spherical triangles : more fully and amply then hath ever been set forth either by Gemma Frisius, Metius, Hues, Wright, Blaew, or any others that have taught the use of the globes : and that so plainly and methodically that the meanest capacity may at first reading apprehend it, and with a little practise grow expert in these divine sciences / by Joseph Moxon ; whereunto is added Antient poetical stories of the stars, shewing reasons why the several shapes and forms are pictured on the coelestial globe, collected from Dr. Hood ; as also a Discourse of the antiquity, progress and augmentation of astronomie.

PROB. XVI.

To Steer in the Night by the Stars.

REctifie the Globe and Hour Index as by Prob. 2. of the last Book, and turn about the Globe till the Index of the Hour Circle points to the Hour of the Day or Night: Then turn the Globe till the Difference of Longitude between the Place you depart from, and the Place you sail to pass through the Meridian and if any Star in the Latitude of the Place you sail To come to the Meridian, or neer the Meridian with the degree of the difference of Longitude, that Star is at that time in or neer the Zenith of that Place you sail to: and by finding the same Star in Heaven, as by Prob, 44. of the last Book you may direct your ship towards that Star, and fail as confidently (saies M^r Blagrave) as if Mercurie were your Guide. But because this Star moves from the Zenith of this Place you must often examine what Star is come to the Zenith, and so often charge the Star you Steer by, as the length of your Voyage may require.