The English globe being a stabil and immobil one, performing what the ordinary globes do, and much more / invented and described by the Right Honorable, the Earl of Castlemaine ; and now publish't by Joseph Moxon ...

OPERATION XX. How to describe a Direct reclining North or South Dial.

SUPPOSE then that the Plane lay directly South, and that* 1.1 its Reclination were 20 Degrees, you have nothing to do, but either Geometrically to make on it a direct Vertical South Dial for the Elevation of 71 Degrees and ½ (I mean for a Plane 20 Degrees neerer the Pole than your own Zenith) or to fix your String on 71 gr. and 30 min. in your Meridian (that is to say at A in scheme 25th. and then to draw your said string over the East or West Points of your Globe, for 'twill represent this Plane, since it Reclines or falls back from the Zenith 20 de∣grees; therefore the Distances between the Hour-Circles that intersect with your String, must (for the former reasons) give you in any blind Circle (which shall be equal to a great one on your Globe) marks (viz. b, c, d, e, f, g,) for the corresponding Hour-lines; and the Meridian being the Substilar (since 'tis

the Hour Circle that falls on the Plane at right Angles) the Height of your Stile must (as in all Direct Vertical Dials) be* 1.2 the distance from the Pole to A, the supposed Point, or Place where your String is fixed. Now had your Plane Reclin'd 20 Degrees the other way, that is to say▪ had it Reclin'd so many Degrees facing the North, you must have fixed your String at N, viz. 20 Degrees short of the Zenith, and consequently your said String would have intersected with the Hour Circles at o, p, q, r, s; therefore a Direct Vertical North Dial for the Lati∣tude of 31 g. 30 m. will be the required Dial.

Notes

• * 1.1

  The Constru∣ction and De∣monstration of a declining direct Dial facing the South.
• * 1.2

  A Direct North recli∣ning Plane.