In the Ephemeris the longitudes of the planets are given daily for mean noon; so, to find the _exact_ place of a planet for a given time, we must note the difference of longitude between the previous noon and noon of the day for drawing the map for a.m. and for p.m., the difference between noon of the day and noon of the day after. This _difference_ is the motion of the planet in 24 hours, which we must work thus: As 24 hours are to--hours (_i.e._, the difference between the given time and noon), so is the daily motion to the motion required. For example, the [Sun] at noon on the 6th January is (omitting seconds) in 19° 29' [Capricorn], and on the 10th January at noon he is in 20° 30' [Capricorn], which gives a daily motion of 59 minutes. We must find his place for 3 p.m. on the 9th January. As 24 hours are to 3 hours, so are 59 minutes to the time required; this equals about 7 minutes, which we add to the [Sun]'s longitude at noon on the 9th. If the event had been for a.m. this amount would have been _deducted_ from the [Sun]'s longitude at noon on the day of the event. We must proceed in the same way for the other planets and place them in the map according to their positions in respect to the degrees on the cusps of the houses. The [Sun] will be in 19° 36' [Capricorn], or about the middle of the 7th house. And note that the number of degrees of a sign on the cusp of any house shows that that sign commenced _in_ the previous house. Supposing the [Sun] had been 1° of [Capricorn], we should then have placed it in the 6th house, a little below the cusp of the 7th. When a planet is _Retrograde_ (shown in the Ephemeris thus, _R._), we _add_ the amount to the longitude when the event is before noon or a.m., and _deduct_ it from the longitude when the event is after noon or p.m. The mode of giving the judgment on a horoscope will be shown farther on. CHAPTER IX. OF THE INFLUENCES OF THE FIXED STARS The fixed stars are so called because they appear to keep at the same distance from one another in the heavens. All of these stars have their respective influences analogous to those of the planets. The following table of the principal fixed stars, with their several magnitudes and natures, will be found useful. It is only those of the first and second magnitude which much affect us; the influence of those stars marked as of fourth magnitude is very slight. The time of the rising and setting of the fixed stars varies according to the latitudes of the places of observation. Their longitudes increase at the annual rate of 50 seconds, but their latitudes vary very little. The right ascension and declinations of the numerous fixed stars are given every year in the Nautical Almanack. TABLE OF THE PRINCIPAL FIXED STARS, WITH THEIR MAGNITUDES AND NATURES. _Stars._ _Magnitudes._ _Natures._