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. LIV.

The Age of the Moon given, to find her place in the Eclip∣tick according to her mean motion.

THis Probleme may be performed exact enough for Com∣mon uses by the Globe, but in regard it only shews the Moons place in the Ecliptick according to her meat motion, it will often fail you some few degrees of her true Place. The work is thus,

First set figures to every twelth degree of the Equinoctial, ac∣counted from the Equinoctial Colure, marking them with 1, 2, 3, 4. &c. to 30 which will end where you began viz. at the E∣quinoctial Colure again: so shall the Equinoctial be divided into 30 equal parts, representing the 30 Dayes of the Moons Age These figures (to distinguish them from the degrees of the Equator) were best be writ with Red Ink.

When you would enquire the Moons Place, Elevate the North Pole 90 degrees, that is, in the Zenith, so shall the Equator ly in the Horizon: Then bring the Equinoctial Colure against the Day of the Moneth in the Horizon, so shall the Moons Age written in Red figures, stand against the Signe and degree in the Horizon that the Moon is in at that Time.

Example.

September 28. 1658. I would know the Moons place in the Ecliptick, she being then 12 Daies old. Therefore I Elevate the North Pole 90 degrees above the Horizon, and turn the Globe about till the Equinoctial Colure come to September 28. in the Circle of Daies on the Horizon; then looking against what Signe and degree of the Ecliptick Circle in the Horizon the 12^th division in Red figures stands, I find ♓ 9. which is the Signe and degree the Moon is in, according to her mean Motion.

This Probleme may be applyed to many Uses: for, having the Moons Place you may find the Time of her Rising, Southing, Setting, and Shining &c. by working with her, as you were taught to work with the Sun, in several fore-going Problemes, proper to each purpose.