of (XA) be 6 foot which is ordinary the height of a man, the eye looking from (X) to (B) shall see 2 miles and 3 quarters, if (X) be 20 foote high (BA) will bee fiue miles, if 40 foote 7 miles, if 50 foote 8 miles.[1] So that from the mast of a ship 50 foote high, a man may see round about at sea 8 miles every way, toward (BG) and (F).  So farre may the water it selfe be seene, but any high thing on the Water may be seene farther, 16, or 20 miles according as the height is, as the ship at (C) may be seene from (X) as far more as it is from (A) to (B).  There can be therefore no certaine quantity and space set downe for this sensible Horizon, which continually varies according to the height of the eye aboue the plaine ground or sea.  This Horrizon is not at all painted on the globe nor can be.

[Footnote 1:  See Wright of Navigation p. 229.]

[Illustration]

The intelligible or true Horizon is a line which girts the earth round in the midst, and divides it into two equall parts or Haemispheares the vppermost vpon the top & middle point whereof wee dwell, and that which is vnder vs. Opposite to this in the Heavens is another Horizon, which likewise cuts the Heaven into two Hemispheres, the vpper and the lower.  Aboue which circle when any starre or the Sunne is moued, it then riseth vnto vs, and setteth vnto those that dwell opposite vnto vs, and so on the contrary, you may conceiue it best thus, if standing vpon a hill, or some open place, where you may perfectly see the setting of the Sunne, you marke when the Sun is halfe gone out of your sight, you may perceiue the body of the Sunne cut in two, as it were by a line, going along through it, the halfe aboue is yet seene, that vnderneath is gone out of your sight.  This line is but a peece of the Horrizon, which if you conceiue to be drawen vpward about the World from the West to the North, and so by East and South, to West againe you haue the whole Horrizon described.

This circle is not drawen vpon the body of the globe, because it is variable; but stands one the outside of it, beeing a broad circle of wood couered with paper on which are sett the moneths and days of the yeare, both in the old and new Calender, and also the 12 signes, and the points of the compasse.  All which are easily discerned by the beholdinge.  The vse of this Horizon is not so much in Geographie as in Astronomie.

The Zodiake is a circle which compasseth the earth like a belt, crossing the aequator slopewise, not streight as the Meridians doe. Opposite to it in the Heauens is another circle of the same name, wherein are the 12. signes, and in which the Sunne keepes his owne proper course all the yeare long, neuer declining from it on the one side or other.  The vse hereof in Geography is but litle only to shew what people they are ouer whose heads the Sunne comes to bee once or twice a yeare; who are all those that