INDEX OF THE PLATES. 



ASTRONOMY. 



Eclipfc, Mr. Pond's Machine for, xii. lOO. • 



Ecliptic, xii. 101 — 103.* 



Egyptian Syftem, xx. 16. 



Elevation, xii. 102. 



Elliptic, xii. 103. 



Elongation, xii. 104. 



Epicycle, xii. loj. 



Equal Altitude, xii. 1 06. 



Equation of the Center, xii. 107.* 



Time, xii. 108, 109.** 

 Equator, xii. 1 09.* 

 Equinox, xu. 1 10. 



Evcftion, xii. 107— 109. (onefpire) 

 Excentric, xiii. no— 113. 

 Galaxy, xiii. 1 14, 115. 

 Geocentric, xiii. 1 16. 

 Globe, xiv. 117 — 121. 



Fcrgufon's Celeftial, XV. 122. 

 Planetary, xv. 123. 

 Gra%itation, xv. 524 — 138. 

 Heat, xvi. 138. 



Heliocentric Latitude, xvi. 139. 

 Hemifphere, Horizon, Tropics, xvi. 140. 

 Northern, i. 

 Southern, ii. 

 Horizon, xvi. 140, 141. 

 Horodiftical Quadrant, xix. 8. 

 Hour, xvi. 142. 

 Jupiter, xvi. 143 — 146. 



Satellites of, xxi. 3. 

 Latitude, xvi. 147. 



Heliocentric, xvi. 139. 

 Reduftion, xvi. 148. xix. 10. 

 Longitude, xvii. I. 

 Magnitudes, proportional, of the primary Planets, ii. lo. 



of the Sun, as feen from ditto, ii. 11. 

 Mars, xvii. 2. 

 Meridian Line, xvii. 3, 4. 

 Moon, xvii. 5 — 15. 

 Moon's Parallax, sviii. 8 — 14. 

 Nodes, xviii. 2. 

 Orion, Conftellation of, i. 

 Paracentric, xviii. 3. 

 Parallax, xviii. 4 — 7. 



of Altitude, i. 8. 

 of the Moon, xviii. 8 — 14. 

 of Venus, xviii. 15. 

 Particula Exfors, xix. I. 

 Penumbra, xix. 2, 3. 

 Planet, xix. 3.* — 6. 

 Preceflion of the Equinoxes, xix. 7. 

 Profthapha=refis, xix. 7.* 

 Ptolemaic Armillary Sphere, xx. 6. 



Syflcm, XX. 14. 

 Pythagorean Syftem, xx. 15. 

 Quadrant of Altitude, xiv. 120. xix. 9. 

 Quadrant, Horodidical, xix. 8. 

 Reduftion, Latitude, xvi. 148. xix. 10. 

 Refraftion, xix. 1 1. 



of Altitude, i. 7. 

 Retrogradation of Planets, xix. 12. 

 the Sun, xix. 13. 

 Saturn's Ring, xix. 14 — 16. 

 Solar Syftem, ii. 

 Sphere, Armillary, iii. 14. 



ASTRONOMY. 



Sphere, Copernican, xx. 7. 



Ptolemaic Armillary, xx. 6. 

 Stars, XX. 9 — 13. 

 Syftem, Copernican, xx. 15. 



Egyptian, xx. 16. 



Ptolemaic, xx. 14. 



Pythagorean, xx. 15. 



Solar, ii. & xxi. I — 4. 



Tychonic, xx. 17. 

 Times of the Planets, xxi. 2. 

 Trigon, xxi. 5 — 7. 

 Tropics, xvi. 140. 

 Tychonic Syftem, xx. 17. 

 Velocities oi the Planets, xxi. 4. 

 Venus, xxi. 8 — 1 1. 



Parallax of, xviii. 15. 

 Urfa, Major and Minor, Constellation ii. 

 Whirling Table, xxi. 13 — 22. 

 Year, xxi. 12. 



ASTRONOMICAL INSTRUMENTS. 



Aftrolabe, i. i. 



Back Staff, i. 2. 



Bird's Quadrant, Graduation of, xviii. 2. 



Bifedtion of an Arc, xxi. 5. 



Borda's Circle, ii. 4 — 9. 



Repeating Circle, without refledlion, vi. 

 Brewfter's, Dr., Patent Telcfcope, xxx. 4. 

 Cavendiih's, Mr., method of graduating Circles, xvui. 4. 



Quinqueleftions, xviii. 5. 

 Chaulne's, Due de, method of graduating Circles, xviii. ^. 

 Circle, Borda's, ii. 4 — 9. 



Repeating, without refleftion, vi. 

 Graduated, with 2 and 3 verniers, iv. i — 4. 

 Mayer's, ii. I — 3. 

 Mendoza's, iv. 5. 

 Ramfden's, v. 



Troughton's Englifh Reflefting, iii. i, 2. 

 Mural, X. 

 Portable, ix. 



Repeating, without refleftion, vii. 

 WolkuTon's, viii. 

 Clavius's method of graduating a Circle, xxi. 1, 2. 

 Cole's Quadrant, xxiii. 2. 



Mr., Equal Altitude, xvii. 3. 

 Crofs Staff, i. 3. 

 Davis's Quadrant, i. 2. 

 Dial, Star, i. 6. 

 DoUond's Portable Equatorial, xi. 3. 



Objett Glafs Micrometer, xii. 4. 

 Refraftion Apparatus, xii. 4. 

 Dynametcrs, xxix. 

 Elton's Quadrant, i. 8. 

 Equal Altitude Inllrument, Cotes's, xvii. 3. 



Earl of Hay's, xvii. 4, 5. 

 Equatorial Inflruments, portable, DoUond's, xi. 3. 



Fayrer's, xi. 4. 

 Nairne's, xii. i. 

 Ramfden's, xi. 2. 

 Made by ditto for Sir G. 



Shuckburgh, xv. 

 Short's, xi. 1. 

 Equatorial, Univerfal, by Troughton, xiv. 

 Equatorial Inllrument, Troughton's, at Armagh, x»i. 



