Suggestions for applying the direct parallactic method Tables referring to stations for observing transit of 1874:- Subject of eclipses inadequately treated in text-books Eclipse-limits Varying presentation of revolving circle (foot-note) Number of eclipses in eclipse-seasons Number of eclipse-seasons in a year Another mode of dealing with the subject Nature of the Earth's shadow-cone and the Moon's 307 308 343 V. Two views of a prominence by Zöllner (coloured) To face page 439 IX. The transit of 1874, ingress】 To face each other between pages X. 440, 441 egress 4. Illustrating measurement of Moon's distance 5. Aristarchus' method of measuring Sun's distance 6. Hipparchus' 7. Diagram 8. Orbits and conjunction-lines of Mars and the Earth 9. Measurement of Mars's distance 14 16 17 19 21 22 10. Orbits of Venus and the Earth 26 11. Transits of Venus (illustrating Halley's method) 12. Illustrating Delisle's method of observing transits 13. Diagram 29 34 38 50. Sun-spots (Capocci) 51. Solar granules (Huggins) 17. Venus at ingress (apparent internal contact) (real contact) 18. 19. Diagram 20. Diagram 21. Prismatic dispersion of light 22. Wollaston's observation 23. Fraunhofer's lines. 24. The heat, light, and actinic spectra 25. Dispersion of light through a battery of prisms 26. Diagram illustrating effects of dispersion 27. Diagram 28. A battery of prisms 29. Browning's automatic contrivance 30. A modification of same 31. Direct vision prism 32. Twice-acting battery 33. The author's double automatic twice-acting battery 34. Prismatic analysis of the Sun's surface 38. How the spectroscope makes prominences visible . 48. Large spot-group showing willow-leaves (Nasmyth) 49. Sun-spots showing penumbral rills (Secchi) 52. Solar leaf-stalks (Secchi) 225 53. Remarkable Sun-spot (Secchi) . 226 51. Views of the great spot of 1865 (Howlett) . 230 58. Prominences seen during the eclipse of 1851 (Airy) . 247 64. Chandelier prominence seen in 1860 (Goldschmidt) 67. 68. Illustrating distribution of prominences (Gray) . 247 . 247 72. Widening of the hydrogen F-line in prominence-spectrum 73. Spectroscopic indications of solar cyclones 75. The first prominence seen by aid of spectroscope (Huggins) 76. Prominence seen by Huggins's method (Lockyer) . 268 70. Eclipsed Sun, August 1868, photographed at Aden 71. Spectrum of prominence and of solar limb 77. Same prominence ten minutes later 78. Prominences seen during American eclipse (1869) 79. Illustrating progress of Moon's shadow-cone during eclipse 80. The corona during eclipse of 1842 81. The corona in 1858 (Liais) 85. as photographed by Secchi in 1860 as drawn in 1868 at Mantawalok-Kekee 6 86. Diagram exhibiting incorrectness of Atmospheric-glare theory' 87. The Milky Way as a spiral 88. Motion of the Earth's orbit through space 89. Earth's motion through space 90. Proper motions of stars in Ursa Major, &c. |