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24 hours Accumulated rate Aldebaran Apparent Distance April 20 Arc always additive artificial horizon ascertain astronomical celestial object Chro Co-secant Co-sine Co-tan Corr corresponding daily rate determining the longitude Diet Diff Difference of Latitude Dint Dirt Ditto ecliptic Equation at Greenwich given day Greenwich mean hence hourly difference Index error Lat Dep Latitude and Departure Logarithmic Sines longitude by chronometer Lunar Arc lunar distance lunar observation meridian Meridian of Greenwich moon Moon's apparent altitude Moon's declination Moon's horizontal parallax Moon's right ascension natural number Nautical Almanac observed altitude observer's eye obtained Planet Portsmouth prime vertical proportional logarithm refraction required the true Secant Second Arc semid semidiameter sextant shewn ship side column subtract sum or remainder Sun's apparent altitude sun's corrected sun's declination Sun's polar distance Sun's right ascension Sun's true altitude Table XI taken Tangent Third Arc true distance true longitude ЗО
Page 2 - The heavens declare the glory of God : and the firmament sheweth his handy work. Day unto day uttereth speech, and night unto night sheweth knowledge.
Page 7 - Thousands of thousands of suns, multiplied without end, and ranged all around us, at immense distances from each other, attended by ten thousand times ten thousand worlds, all in rapid motion, yet calm, regular, and harmonious, invariably keeping the paths prescribed them ; and these worlds peopled with myriads of intelligent beings, formed for endless progression, and perfection, and felicity.
Page 1 - ASTRONOMY is that department of knowledge which has for its object to investigate the motions, the magnitudes, and distances, of the heavenly bodies ; the laws by which their movements are directed, and the ends they are intended to subserve in the fabric of the universe. This is a science which has in all ages engaged the attention of the poet, the philosopher, and the divine, and been the subject of their study and admiration. Kings have descended from their thrones to render it homage, and have...
Page 30 - Moon and certain heavenly bodies, such as they would appear to an observer at the centre of the Earth. When a Lunar Distance has been observed on the surface of the...
Page 6 - Instead then of one sun and one world only in the universe, as the unskilful in astronomy imagine, that science discovers to us such an inconceivable number of suns, systems and worlds, dispersed through boundless space, that if our Sun, with all the planets, moons, and comets belonging to it, were annihilated, they would be no more missed by an eye that could take in the whole creation, than a grain of sand from the sea shore. The space they possess being comparatively so small, that it would scarce...
Page 9 - The ecliptic is that great circle in the heavens which the sun appears to describe in the course of a year.
Page 8 - Antdeci, a name given to those in habitants of the earth, who live under the same meridian, and at equal distances from the equator, but on opposite sides of it.
Page 34 - Sun at a conjunction, and returning to him again ; which is 29*' 121' 44m. The civil months are those which are framed for the uses of civil life ; and are different as to their names, number of days, and times of beginning, in several different countries. The first month of the Jewish Year fell, according to the Moon, in our August and September, old style ; the second in September and October ; and so on. The first month of the Egyptian year began on the 29th of our August. The first month of the...
Page 5 - ... from us than we are from the sun. It is not to be imagined that all the stars are placed in one concave surface, so as to be equally distant from us ; but that they are placed at immense distances from one another through unlimited space : so that there may be as great a distance between any two neighbouring stars, as between our sun and those which are nearest to him.