Book,  Paragraph

 1   I,  2 |   generation.~Male and female differ in their essence by each
 2   I,  2 |     offspring. And these must differ from each other, so that
 3   I,  2 |    consequently the male will differ from the female. (For even
 4   I,  2 |  concerned in copulation that differ primarily in their forms,
 5   I,  8 |  begin with the ovipara, they differ in the manner of laying
 6   I,  18|     Semen, or seed, and grain differ only in the one being earlier
 7   I,  20|       But because it does not differ in kind at any rate this
 8   I,  20|     the passive sex must also differ. If, then, the male stands
 9  II,  3 |       and the like, for these differ in being more or less glutinous
10 III,  2 | contained this principle must differ from the rest. Therefore
11 III,  5 |      that the females of fish differ from what are supposed to
12 III,  5 |       the fact that fish-eggs differ from those of birds in one
13 III,  7 |      of the one class of fish differ from the males and females
14 III,  10|      of animals the two sexes differ. Besides they would in that
15 III,  11|   does the nature of testacea differ from that of plants, since
16  IV,  1 |      by which male and female differ from one another. This is
17  IV,  1 | intercourse, since these also differ in the way stated previously.~
18  IV,  1 |       they see that the sexes differ actually by the whole of
19  IV,  4 |       frequently).~Outgrowths differ from the production of many
20  IV,  4 |       stated before; monsters differ from these in that most
21   V,  1 |    which the parts of animals differ. I mean such qualities of
22   V,  1 |       kinds of animals do not differ from one another in the
23   V,  1 |    colour, so neither do they differ from themselves, for they
24   V,  1 |      eyes between these, they differ only in degree.~We must
25   V,  3 |            3~As for hair, men differ in this themselves at different
26   V,  3 |     among the vivipara. Hairs differ in respect of hardness and
27   V,  3 |     intermediate shades. They differ also in some of these respects
28   V,  6 |      reason of some affection differ from those white by nature,
29   V,  6 |     the simply coloured which differ from one another, as white