The sign+prefixed to the latitude or declination of the Sun, &c. indicates that the same is north; but when the sign is prefixed, the latitude or declination is south. The letters M. A. or m. a. are used to denote Morning and Afternoon. By reduced latitude is meant the latitude referred to the centre of the terrestrial spheroid. If the earth were a perfect sphere, the common latitude and the reduced latitude would be the same. With the Mean Time (at Washington) of the Sun's Entrance into, and Continuance in, each of them, and the Length of the Seasons. Sun enters h. m. S. 10. V (Capricornus.) 1830, Dec. 21, 13 58 3.7 11. (Aquarius.) 1. 2. 8 (Taurus.) Feb. 18, 15 18 7.6 1831, Jan. 20, 0 35 15.9 March 20, 15 19 53.6 Continues d. h. m. 3. 29 10 37 12.2 14 42 51.7 30 0 1 46.0 12 16 41.3 31 0 15 1.4 8 36 57.3 |