48. What hour-circle is called the six o'clock hour line: def. 51, p. 12. 9. What are the azimuth or vertical circles, and what is their use? def. 43, p. 10. 10. What is the prime vertical? def. 44, p. 11. II. Small circles on the terrestrial globe. 1. What is a small circle, and how many are generally drawn on the terrestrial globe? def. 7, p. 3. 2. What are the tropics, and how far do they extend from the equator, &c.? def. 15, p. 5. 3. What are the polar circles, and where are they situated? def. 16, p. 6. 4. What are the parallels of latitude, and how many are generally drawn on the terrestrial globe? def. 17, p. 6. 5. What circles are called Almacantars? def. 39, p. 10. III. Great circles on the celestial globe. 1. How many great circles are drawn on the celestial globe? 2. The lines of terrestrial longitude are perpendicuJar to the equator, on the terrestrial globe, and all meet "in the poles of the world; to which great circle on the globe are the lines of celestial longitude perpendicular, and on what points of the globe do they all meet? 3. What are the colures, and into how many parts do they divide the ecliptic? def. 42, p. 10. 4. What is the equinoctial, and what is its use? def. 9, p. 3. 5. What is the ecliptic, and where is it situated? def. 11, p. 3. 6. What is the zodiac, and into how many parts is it divided? def. 12, p. 3. 7. What are the signs of the zodiac, and how are they marked? def. 13, p. 4. 8. Which are the spring, summer, autumnal, and winter signs and on what days does the sun enter them? def. 13, p. 4. T t 9. Which are the ascending and descending signs? def. 14, p. 4. IV. Small circles on the celestial globe. 1. How many small circles are drawn on the celestial globe? 2. What are the tropics, and now far do they extend from the equinoctial? def. 15, p. 5. 3. What are the polar circles, and where are they situated def. 16, p. 6. 4. What are the parallels of celestial latitude? def. 40, p. 10. 5. What are the parallels of declination? def. 41, p. 10. V. The brass meridian, and other appendages to the globes. 1. What is the brazen meridian, and how is it divided and numbered? def. 5, p. 2. 2. What is the axis of the earth, and how is it represented by the artificial globes? def. 3, p. 2. 3. What are the poles of the world? def. 4, p. 2. 4. What are the hour circles, and how are they divided? def. 18, p. 6. 5. What is the horizon, and what is the distinction between the rational and sensible horizon? defs. 19, 20, and 21, page 6. 6. What is the wooden horizon, and how is it divided? def. 22, p. 7. 7. What is the mariner's compass, how is it divided, and what is the use of it on the globe? defs. 32, 33, p. ĕ and 9. 8. What is the quadrant of altitude, how is it divided, and what is its use? def. 36, p. 9. VI. Points on, and belonging to, the globes. 1. What is the pole of a circle? def. 28, p. 8. 2. What is the zenith, and of what circle is it the pole? def. 26, p. 8. 3. What is the nadir, and of what circle is it the pole? de 27, p. 8. 4. What are the cardinal points of the horizon? def. 23. p. 7. 5. What are the cardinal points in the heavens? def, 24, p. 7. 6. What are the cardinal points of the ecliptic? def. 25, p. 7. 7. What are the equinoctial points? def. 29. p. 8, 8. What are the solstitial points? def. 30, p. 8. 9. What is the culminating point of a star, or of a planet? def. 5, p. 12. 10. What are the poles of the ecliptic, and how far are they from the poles of the world? VII. Latitude and longitude on the terrestrial globe, the division of the globe into zones and climates, the the positions of the sphere, the shadows and positions of the inhabitants with respect to each other, &c, 1. What is the latitude of a place on the terrestrial globe? def. 34, p. 9. 2. What is the longitude of a place on the terrestrial globe? def. 37, p. 10. 3. What is a zone, and how many are there on the terrestrial globe? def. 70, p. 18. 4. What is the situation, and what is the extent of the torrid zone? def. 71, p. 18. 5. Where are the two temperate zones situated, and what is the extent of each? def. 72, p. 18. 6. Where are the two frigid zones situated, and what is the extent of each? def. 73, p. 18. 7. What is a climate, and how many are there on the globe? def. 69, p. 16. 8. Have all places in the same climate the same atmospherical temperature? p. 16. 9. How many different positions of the sphere are there? def. 65, p. 15. 10. What is a right sphere, and what inhabitants of the globe have this position: def. 66, p. 15; see likeruise Prob. XXII. p. 194. ر 11. What is a parallel sphere, and what inhabitants of the globe have this position? def. 67, p. 15; and Prob. XXII, p. 196, &c. 12. What is an oblique sphere, and what inhabitants of the globe have this position? def. 68 p. 15; and Prob. XXII. p. 197, &c. 13. What parts of the globe do the Amphiscii in, habit, and why are they so called? def. 74. p. 19. 14. When do the Amphiscii obtain the name of Ascii? 5. What parts of the globe do the Heteroscii inhabit, and why are they so called? def. 75, p. 19. 16. What parts of the globe do the Periscii inhabit, and why are they so called? def. 76, p. 19. 17. What inhabitants are called Antoeci to each other, and what do you observe with respect to their latitudes, longitudes, hours, &c. def. 77, p. 19. 18. What inhabitants are called Perioeci to each other, and what is observed with respect to their lati, tudes, longitudes, hours, seasons, &c. def. 78, p. 19. 19. What are the antipodes, and what is observed with respect to their seasons of the year, &c. def. 79, p. 19. VIII. Latitudes and longitudes of the stars and planets on the celestial globe, &c. together with the poetical rising and setting of the stars, &c. 1. What is the latitude of a star or planet? def. 35, p. 9. 2. What is the longitude of a star or planet? def. 38, p. 10. 3. What are the fixed stars, and why are they so called? def 88, p. 22. 4. What is a constellation, and how many are there on the celestial globe? def. 90, p. 23; see the tables, p. 23, 24, 25, and 26. 5. What is meant by the poetical rising and setting of the stars? def 89, p. 22. 6. When is a star said to rise and set cosmically? 7. When is a star said to rise and set achronically? 8. When is a star said to rise and set heliacally? + 9. What is the Via Lactea, and through what constellations does it pass? def. 91, p. 32. 10. What kind of stars are termed Nebulous? def. 92,/. 33. 11. How are the stars, which have not particular names, distinguished on the celestial globe? def. 93, p. 33. IX Definitions and terms common to both the globes. 1. What is the declination of the sun, a star, or planet? def 14, p. 5. 2. What is a hemisphere? def. 31, p. 8. 3. What is the altitude of any object in the heavens ? def. 45, *. 11. 4. What is the meridian altitude of the sun, a star, or planet? 5. What is the zenith distance of a celestial object? def. 46, 11. 6. What is the polar distance of a celestial object? def. 47, b. 11. 7. What is the amplitude of a celestial object? def. 48, p. 11. 8. What is the azimuth of a celestial object? def. 49, p. 11. 9. What is the right ascension of the sun, or of a star, &c. def. 80, 19. 10. What is the oblique ascension of the sun, or of a star, &c. def. 81, p. 20. 11. What is the oblique descension of the sun, or of a star, &c.? def. 82, p. 20. 12. What is the ascensional or descensional difference? def. 83, p. 20. X. Time; years, days, &c. 1. What is a solar or tropical year, and what is the length of it? def. 62, p. 14. 2. What is a siderial year, and what is its duration? def. 63, p. 14. 3. What is an astronomical day? def. 58, . 13. |