Book, Paragraph

 1   I,  3 |     or fiery: for they do not occur in that upper region but
 2   I,  4 | thrown? Apparently both cases occur: sometimes it is like the
 3   I,  6 |      theory this ought not to occur occasionally but always.
 4   I,  8 |  explained the phenomena that occur in that part of the terrestrial
 5   I,  10|    prove that these phenomena occur because the vapour does
 6   I,  12|     in winter; yet hailstorms occur chiefly in spring and autumn
 7   I,  12|     And in general hailstorms occur in warmer, and snow in colder
 8   I,  12|    fact is that hail does not occur at all at a great height:
 9   I,  12|     that hailstorms sometimes occur in the late summer as we
10   I,  14|   this excess does not always occur in the same place. The deluge
11  II,  7 |     do earthquakes frequently occur in places which are not
12  II,  8 |  earthquakes and the severest occur at night or, if by day,
13  II,  8 | spongy and cavernous: so they occur near the Hellespont and
14  II,  8 |  earthquake of this kind does occur a quantity of stones comes
15 III,  1 |   northerly rain, since these occur when the cold does prevail.~
16  IV,  7 |     of subjects in which they occur have been described.~