| FIG. | | | | PAGE |
| 1. | | Archimedes | | 8 |
| 2. | | Leonardo da Vinci | | 10 |
| 3. | | Copernicus | | 12 |
| 4. | | Homeric Cosmogony | | 15 |
| 5. | | Egyptian Symbol of the Universe | | 16 |
| 6. | | Hindoo Earth | | 17 |
| 7. | | Order of ancient Planets corresponding to the Days of the Week | | 19 |
| 8. | | Ptolemaic System | | 20 |
| 9. | | Specimens of Apparent Paths of Venus and of Mars among the stars | | 21 |
| 10. | | Apparent Epicyclic Orbits of Jupiter and Saturn | | 22 |
| 11. | | Egyptian System | | 24 |
| 12. | | True Orbits of Earth and Jupiter | | 25 |
| 13. | | Orbits of Mercury and Earth | | 25 |
| 14. | | Copernican System as frequently represented | | 26 |
| 15. | | Slow Movement of the North Pole in a Circle among the Stars | | 29 |
| 16. | | Tychonic system, showing the Sun with all the Planets revolving round the Earth | | 38 |
| 17. | | Portrait of Tycho | | 41 |
| 18. | | Early out-door Quadrant of Tycho | | 43 |
| 19. | | Map of Denmark, showing the Island of Huen | | 45 |
| 20. | | Uraniburg | | 46 |
| 21. | | Astrolabe | | 47 |
| 22. | | Tycho's large Sextant | | 48 |
| 23. | | The Quadrant in Uraniburg | | 49 |
| 24. | | Tycho's Form of Transit Circle | | 50 |
| 25. | | A Modern Transit Circle | | 51 |
| 26. | | Orbits of some of the Planets drawn to scale | | 60 |
| 27. | | Many-sided Polygon or Approximate Circle enveloped by Straight Lines | | 61 |
| 28. | | Kepler's Idea of the Regular So
ght">104. | | Biela's Comet as last seen in two Portions | | 346 |
| 105. | | Radiant Point Perspective | | 348 |
| 106. | | Present Orbit of November Meteors | | 349 |
| 107. | | Orbit of November Meteors before and after Encounter with Uranus | | 351 |
| 108. | | The Mersey | | 355 |
| 109. | | Co-tidal Lines, showing the way the Tidal Wave reaches the British Isles from the Atlantic | | 359 |
| 110. | | Whirling Earth Model | | 364 |
| 111. | | Earth and Moon Model | | 365 |
| 112. | | Earth and Moon (Earth's Rotation Neglected) | | 366 |
| 113. | | Maps showing how comparatively Free from Land Obstruction the Ocean in the Southern Hemisphere Is | | 369 |
| 114. | | Spring and Neap Tides | | 370 |
| 115. | | Tidal Clock | | 371 |
| 116. | | Sir William Thomson (Lord Kelvin) | | 373 |
| 117. | | Tide-gauge for recording Local Tides | | 375 |
| 118. | | Harmonic Analyzer | | 375 |
| 119. | | Tide-predicter | | 376 |
| 120. | | Weekly Sheet of Curves | | 377 |
PIONEERS OF SCIENCE
PART I
FROM DUSK TO DAYLIGHT
DATES AND SUMMARY OF FACTS FOR LECTURE I
Physical Science of the Ancients. Thales 640 B.C., Anaximander 610 B.C., Pythagoras 600 B.C., Anaxagoras 500 B.C., Eudoxus 400 B.C., Aristotle 384 B.C., Aristarchus 300 B.C., Archimedes 287 B.C., Eratosthenes 276 B.C., Hipparchus 160 B.C., Ptolemy 100 A.D.
Science of the Middle Ages. Cultivated only among the Arabs; largely in the forms of astrology, alchemy, and algebra.
Return of Science to Europe. Roger Bacon 1240, Leonardo da Vinci 1480, (Printing 1455), Columbus 1492, Copernicus 1543.
A sketch of Copernik's life and work. Born 1473 at Thorn in Poland. Studied mathematics at Bologna. Became an ecclesiastic. Lived at Frauenburg near mouth of Vistula. Substituted for the apparent motion of the heavens the real motion of the earth. Published tables of planetary motions. Motion still supposed to be in epicycles. Worked out his ideas for 36 years, and finally dedicated his work to the Pope. Died just as his book was printed, aged 72, a century before the birth of Newton. A colossal statue by Thorwaldsen erected at Warsaw in 1830.
