I 
Xxir CONTENTS. 
Chap. Page 
24. The doctrine of Hipparchus about the stars 59 
25. Examples from history of celestial prodigies ; Faces^ Lam- 
pades^ and Bolides ih. 
26. Trahes Celestes; Chasma Cceli ... 60 
27. Of the colours of the sky and of celestial flame ih. 
28. Of celestial coronse 61 
29. Of sudden circles 62 
30. Of unusually long eclipses of the sun ih. 
31. Many suns ih. 
32. Many moons 63 
33. Daylight in the night... ... ih. 
34. Burning shields ih, 
35. An ominous appearance in the heavens, that was seen once only ih. 
36. Of stars wliich move about in various directions 64 
37. Of the stars which are named Castor and Pollux ih. 
38. Of the air, and on the cause of the showers of stones 65 
39. Of the stated seasons 66 
40. Of the rising of the dog- star ... 67 
41. Of the regular influence of the difierent seasons ih. 
4<2i. Of uncertain states of the weather ... 69 
43. Of thunder and lightning ih. 
44. The origin of winds 70 
45. Yarious observations respecting winds 71 
46. The difierent kinds of winds 73 
47. The periods of the winds 75 
48. Nature of the winds 77 
49. Ecnephias and Typhon ... ... ... 79 
50. Tornadoes ; blasting winds ; wlnrlwinds, and other wonder- 
ful kinds of tempests 80 
61. Of thunder ; in what countries it does not fall, and for what 
reason ih. 
52. Of the different kinds of Hghtning and their wonderful effects 81 
53. The Etrurian and the Roman observations on these points ... 82 
54. Of conjuring up thunder 83 
55. Greneral laws of lightning 84 
56. Objects which are never struck 86 
57. Showers of milk, blood, flesh, iron, wool, and baked tiles ... 87 
58. Ratthng of arms and the sound of trumpets heard in the sky 88 
59. Of stones that have fallen from the clouds. The opinion of 
Anaxagoras respecting them ib. 
60. Therambow 89 
61. The nature of hail, snow, hoar, mist, dew ; the forms of clouds 90 
62. The peculiarities of the weather in different places 91 
63. Nature of the earth ih. 
64. Of the form of the earth 94 
65. Whether there be antipodes ? ih. 
66. How the water is connected with the earth. Of the naviga- 
tion of the sea and the rivers 97 
67. Whether the ocean surrounds the earth ... ... . , 98 
