Page:A short history of astronomy(1898).djvu/27
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Contents
xix
PAGE
| § 148. | The Rudolphine Tables |
194 |
| § 149. | Work under Wallenstein : death |
195 |
| § 150. | Minor discoveries : speculations on gravity |
195 |
| § 151. | Estimate of Kepler's work and intellectual character |
197 |
CHAPTER VIII.
| 198-209 |
| § 152. | The general character of astronomical progress during the period |
198 |
| § 153. | Scheiner's observations of faculae on the sun. Hevel : his Selenographia and his writings on comets : his star catalogue. Riccioli's New Almagest |
198 |
| § 154. | Planetary observations : Huygens's discovery of a satellite of Saturn and of its ring |
199 |
| § 155. | Gascoigne's and Aouzout's invention of the micrometer : Picard's telescopic "sights" |
202 |
| § 156. | Horrocks : extension of Kepler's theory to the moon : observation of a transit of Venus |
202 |
| §§ 157-8. | Huygens's rediscovery of the pendulum clock : his theory of circular motion |
203 |
| § 159. | Measurements of the earth by Snell, Norwood, and Picard |
204 |
| § 160. | The Paris Observatory : Domenico Cassini : his discoveries of four new satellites of Saturn : his other work |
204 |
| § 161. | Richer's expedition to Cayenne : pendulum observations : observations of Mars in opposition : horizontal parallax : annual or stellar parallax |
205 |
| § 162. | Roemer and the velocity of light |
208 |
| § 163. | Descartes |
208 |
CHAPTER IX.
| 210-246 |
| § 164. | Division of Newton's life into three periods |
210 |
| § 165. | Early life, 1643 to 1665 |
210 |
| § 166. | Great productive period, 1665-87 |
211 |