Book,  Paragraph

 1   I,  4 |        be for one of these two reasons. But that it is not necessary
 2   I,  5 |        spines.~So much for the reasons why those animals have testes
 3  II,  1 |   living. These, then, are the reasons of the generation of animals.
 4  II,  1 |        can move about, for the reasons already stated, and some
 5  II,  2 | becomes thicker. These are the reasons why semen is firm and white
 6  II,  4 |       out from the mother, for reasons previously stated. An embryo
 7  II,  4 |  discharged by females for the reasons given; for, the female nature
 8 III,  1 |        among them and for what reasons, has been stated previously.
 9 III,  1 |  habits, so that for all these reasons they neither tread nor lay
10 III,  1 |      eggs or few, and for what reasons. And wind-eggs, as said
11 III,  3 |     these respects and for the reasons given the development of
12 III,  10|    alone is impossible for the reasons already given, and besides
13 III,  10|      are produced but in rainy reasons a large brood of ordinary
14  IV,  2 |     from another, for the same reasons. For the nourishment and
15  IV,  8 |  passing through it; for these reasons it is at that time also
16   V,  1 |    black skin. It is for these reasons then that the sight is not
17   V,  7 | weakness.~These, then, are the reasons of these contrarieties,