Book, Paragraph

 1   I,  7|    stands in the relation of a halo to the stars, except that
 2   I,  7|  except that the colour of the halo is due to reflection, whereas
 3   I,  7|   accompany-in fact, a kind of halo in the pure fuel of fire.~
 4   I,  7|       fuel of fire.~As for the halo we shall explain its cause
 5   I,  8|        sun, and we explain the halo as a reflection from it
 6 III,  2|        the nature and cause of halo, rainbow, mock suns, and
 7 III,  2|       each of them occurs. The halo often appears as a complete
 8 III,  3|    explaining the shape of the halo; why it is a circle and
 9 III,  3|        division appears in the halo. Its fading away is a sign
10 III,  3|      moon, and that is why the halo is not seen opposite the
11 III,  3|     with the brightness of the halo. The halo is formed rather
12 III,  3|    brightness of the halo. The halo is formed rather near the
13 III,  3|       wind it is clear that no halo can maintain its position.~
14 III,  4|   opposite the sun whereas the halo is round it. They are both
15 III,  4|     but not in the case of the halo. The other colours shall
16 III,  4|        no complete or circular halo presents this colour, only
17 III,  6| distant object. (This is why a halo is never found opposite