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 1 4 |    happens to prevent it. The reason is that their movement comes
 2 4 |  their right. And this is the reason why the right is the same
 3 4 |      same place, and for this reason the spiral-shaped Testaceans
 4 5 |   plants to the inferior. The reason is that these have no power
 5 7 | exactly as in quadrupeds. The reason of their flexions is their
 6 8 |                         8~The reason why snakes are limbless
 7 12|   also birds bend theirs. The reason is that Nature’s workmanship
 8 12|   forepart of their body. The reason that they bend forward is
 9 14|    and then the off hind. The reason is that (a) if they moved
10 15|      bend them obliquely. The reason is that this is useful for
11 16|      them quadrupeds. And the reason why their legs, except the
12 16|     have to do both, for this reason their limbs are turned under
13 16|      back following.) Another reason for this kind of flexion
14 16|       knock together. But the reason that they are bandy is that
15 17|       We have given above the reason why its legs are not turned
16 17| serviceable for swimming. The reason for their having short legs
17 18|                   18~There is reason, too, for winged creatures