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CHAP. XII.
The elevation of the Pole, the Almicanter, and decli∣nation of the Sun, being given to finde the houre of the day.
The elevation of the Pole is 30 degrees, the declination of the Sun is 20 degrees, the Almicanter of the Sun is 48. degrees, and 18 minutes, the houre of the day is found as followeth, by the ninth Demonstration.
FIrst, upon the centre A. draw the circle B. C. D. E. then draw the Diameter B. D. re∣presenting the Horizon, then from D. unto R. set 30 degrees, the elevation of the Pole, then from R. by the Point A. draw the line R. A. S. representing the Pole of the World, then draw the line F. A. H. crossing the Pole in A. at right Angles, cutting the Meredian Line in F. then from F. set 20 degrees, the declination of the Sun unto L. and then from the point L, draw the Line LPO, representing the parallell of the Sunne, and cutting the Pole of the World in P, then placing one foot of your Compas∣ses in P, extend the other unto L, with which distance of your Compasses, draw the houre circle I, NOQ, then from the Horizon at B, place the Suns Almi∣canter: (which is 48 degrees, and 18 minutes) upon the Quadrant BGL, from B, unto G, then from the point G, draw the line GI, parallell unto the Hori∣zon BAD, cutting the line LO, in I, then from the point I, draw the line KIM, parallell to the Pole of the World QAN, cutting the circle LNO, in M, then let IN, be divided into 6 houres, whereof LM, are three: whereupon I conclude, that it is three houres from noon, that is, at nine a clock in the morning, or three in the afternoone.