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V. Two views of a prominence by Zöllner (coloured)
VI. Daily views of the prominences by Respighi (coloured)
VII. The eclipsed Sun and corona, drawn by Gilman (coloured)
VIII. The Earth's passage through Venus's shadow-cone during
the transit of 1874

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To face page 439

IX. The transit of 1874, ingress】 To face each other between pages

X.

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egress

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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

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10. Orbits of Venus and the Earth

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11. Transits of Venus (illustrating Halley's method) 12. Illustrating Delisle's method of observing transits 13. Diagram

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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

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38. How the spectroscope makes prominences visible
39. Spectroscopic exhibition of motions of recess or approach
40. Interpretation of distorted prominence-lines
41. Illustrating Dr. Wilson's theory of Sun-spots

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48. Large spot-group showing willow-leaves (Nasmyth)

49. Sun-spots showing penumbral rills (Secchi)

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52. Solar leaf-stalks (Secchi)

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53. Remarkable Sun-spot (Secchi)

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51. Views of the great spot of 1865 (Howlett)

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58. Prominences seen during the eclipse of 1851 (Airy)

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64. Chandelier prominence seen in 1860 (Goldschmidt)
65. Another prominence seen in 1860 (Goldschmidt)
66. Photograph of eclipsed Sun in 1860 (De la Rue)
(De la Rue)

67.

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68. Illustrating distribution of prominences

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(Gray)
(Stephenson)

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72. Widening of the hydrogen F-line in prominence-spectrum 73. Spectroscopic indications of solar cyclones

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75. The first prominence seen by aid of spectroscope (Huggins) 76. Prominence seen by Huggins's method (Lockyer)

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70. Eclipsed Sun, August 1868, photographed at Aden 71. Spectrum of prominence and of solar limb

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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.

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as photographed by Secchi in 1860
in 1860 (Feilitsch)

as drawn in 1868 at Mantawalok-Kekee
as photographed by Whipple in 1869

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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.

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97. Parallactic displacement of Venus on Sun's disc 98. Varying presentation of Moon's orbit towards Sun 99. Illustrating effects of rotation and revolution 100. Diagram illustrating theory of eclipses

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105. Diagram 106. Diagram 107. Diagram

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