10. THE SUN ON SEPT. 26, 1870 10 11. NASMYTH’S WILLOW LEAVES 11 12. THE CACTUS TYPE 12 13. EQUATORIAL TELESCOPE AND PROJECTION 13 14. POLARIZING EYE-PIECE 14 15. SPOT OF SEPT. 21, 1870 15 16. SPOT OF MARCH 5, 1873 15 17. SUN ON MARCH 5, 1873 18 18. “THE PLUME” SPOT OF MARCH 5 AND 6, 1873 19 19. TYPICAL SUN-SPOT OF DECEMBER, 1873 21 20. FROST CRYSTAL 23 21. CYCLONE SPOT 24 22. SPOT OF MARCH 31, 1875 25 23. CIRROUS CLOUD 27 24. SPOT OF MARCH 31, 1875 28 25. TYPICAL ILLUSTRATION OF FAYE’S THEORY 29 26. SPOT OF OCT. 13, 1876 30 27. PHOTOGRAPH OF EDGE OF SUN 31 28. FACULA 33 29. LUNAR CONE SHADOW 36 30. TRACK OF LUNAR SHADOW 39 31. INNER CORONA ECLIPSE OF 1869 40 32. SKETCH OF OUTER CORONA, 1869 41 33. TACCHINI’S DRAWING OF CORONA OF 1870 43 34. WATSON’S NAKED-EYE DRAWING OF CORONA OF 1870 44 35. PHOTOGRAPH SHOWING COMMENCEMENT OF OUTER CORONA 45 36. ECLIPSE OF 1857, DRAWING BY LIAIS 48 37. ENLARGEMENT OF PART OF FIG. 38 49 38. FAC-SIMILE OF PHOTOGRAPH OF CORONA OF 1871 51 39. “SPECTRES” 54 40. OUTER CORONA OF 1878 57 41. SPECTROSCOPE SLIT AND SOLAR IMAGE 59 42. SLIT AND PROMINENCES 59 43. TACCHINI’S CHROMOSPHERIC CLOUDS 62 44. TACCHINI’S CHROMOSPHERIC CLOUDS 62 45. VOGEL’S CHROMOSPHERIC FORMS 64 46. TACCHINI’S CHROMOSPHERIC FORMS 66 47. ERUPTIVE PROMINENCES 67 48. SUN-SPOTS AND PRICE OF GRAIN 77 49. SUN-SPOT OF NOV. 16, 1882, AND EARTH 80