20. Solar Corona 117 21. The Great Comet of 1882 119 22. Special Thermometer for use in Deep 129 Borings 23. At the Bottom of the Great Bore 140 24. Three consecutive Shells of the Earth’s 145 Crust 25. Earthquake Routes from Japan to the Isle 171 of Wight Showing Localities of Earthquakes 175 (colour) 26. Showing Coasts invaded by the Great 179 Sea-waves from Krakatoa The Early Stage of the Eruption of 180 Krakatoa (colour) 27. Spread of the Air-wave from Krakatoa to 183 the Antipodes 28. The great Spiral Nebula 193 29. How to find the great Spiral Nebula 196 30. A group of Nebulæ 199 31. A Ray Nebula 201 32. Portion of the Milky Way 205 33. A Spiral Nebula seen Edgewise 211 34. A foreshortened Spiral 212 35. Edge-view of a Spiral boldly shown 213 36. To illustrate Moment of Momentum 223 37. Saturn 233 38. The Ring Nebula in Lyra 249 39. Lunar Craters: Hyginus and Albategnius 255 40. A remarkable Spiral 257 41. A clearly-cut Spiral 259 42. The H and K Lines in the Photographic 276 Solar Spectrum 43. Spectrum of Comet showing Carbon Lines 290 The Solar Spectrum (colour) 290 44. Spectrum of the Sun during Eclipse 291 45. A Spiral presented Edgewise 296 46. The Plane of a Planet’s Orbit 298 47. A Right Angle divided into Ten Parts 301 48. Illustration of the Second Concord 309 49. Orbits of the Earth, Eros and Mars 313 50. I. A Natural System. II. An Unnatural 318 System 51. An elongated irregular Nebula 329 52. Two-branched Spiral 345 53. Cluster with Stars of the 17th Magnitude 353 54. Spectrum of Nova Persei (1901) 359 55. The Apteryx: a Wingless Bird of New 365 Zealand 56. Skeleton of the Apteryx, showing 366 Rudimentary Wings