The CONTENTS. *xvir

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noon when in either of thesepoints 316

LXXXI. Given, the hour from noon,and the fun’s distance fromthe pole ; to find his distancefrom the vertex 318

LXXXII. Given, the fun’s distance fromthe pole, the latitude and fun’sdistance from the vertex byobservation : to find the timeof the day, and the azimuthupon which the sun was atthat time 319

LXXXIII. Given, the latitude, fun’splace, and right ascension : tofind what point of the eclipticculminates, its highest point,

&c. The distance of the nona-gesimal from the vertex, andthe angle made by the verticalcircle passing through the funat that time with the ecliptic 322LXXXIV. Given, the latitude, right as-cension and declination of anypoint of the ecliptic, or of afixed star : to find its risingor setting amplitude, its ascen-sional difference, and thenceits oblique ascension 327

LXXXV. Given, the latitude, the pointsof the ecliptic with which astar rises or sets, and the alti-tude of the nonagesimal whenthose points are upon the ho-rizon :