Book, Paragraph

 1   I,  4 |     goat". When this does not happen it is a "torch". But if
 2   I,  4 |     Further, all these things happen below the moon. This is
 3   I,  7 |       ignites wherever it may happen to be of the right consistency,
 4   I,  8 |       find that this does not happen. Besides, if astronomical
 5   I,  13| region from which the air may happen to flow on each occasion,
 6  II,  3 |       up: for before that can happen the water that has gone
 7  II,  3 |       local causes (this must happen to sea and rivers alike).
 8  II,  6 |       a clear sky-unless they happen to be very cold. Then they
 9  II,  8 |  places. It has been known to happen that an earthquake has continued
10 III,  2 |  observed, for though it does happen it does so rarely. The reason
11  IV,  3 |      kind of thing that would happen if there were imperfect
12  IV,  7 |   Consequently, if any things happen to be solidified by the