Book,  Paragraph

 1   I,  1 |    with the intercourse of the sexes.~Again, some creatures live
 2   I,  14|       liquid excretion to both sexes).~The part common to the
 3  II,  4 |     years, in the case of both sexes. Cases have been known in
 4 III,  12|  regard to the commerce of the sexes, water in many places is
 5  IV,  1 |         see diagram) with both sexes there are underneath these
 6  IV,  1 |     the difference between the sexes is most marked in the sepia;
 7  IV,  2 |       is identical in both the sexes; that is to say, the duct
 8  IV,  9 |       way, the commerce of the sexes takes place usually in the
 9  IV,  11|      difference in size of the sexes is found in fishes, as,
10  IV,  11|       organs are found in both sexes, but are more perfectly
11   v,  2 |       for procreation, but the sexes do not in all cases come
12   v,  5 |        distinction between the sexes is observed in all the species
13   v,  5 |        propensities of the two sexes to catch both one and the
14   v,  5 |    their genitals, and the two sexes take to smelling each other
15   v,  6 |   these tentacles, and the two sexes then bring their suckers
16   v,  8 |     for the intercourse of the sexes in their case is of long
17   v,  12|  thereupon harden. And the two sexes of this animal go about
18   v,  14|      time the neighing in both sexes becomes weaker and weaker.~
19   v,  18|        this distinction in the sexes, the male, as has been stated,
20  VI,  18|   regard to the pairing of the sexes apply partly to the particular
21  VI,  18| reaching maturity, and the two sexes feed apart. Sows, when they
22  VI,  19|     sheep and the goat the two sexes have intercourse all their
23  VI,  20| generally bears eight. The two sexes have intercourse with each
24  VI,  21| recorded of copulation in both sexes at the age of four months.
25  VI,  22|     that age to twenty the two sexes go on improving in the quality
26  VI,  22|       it is with oxen. In both sexes the horse is the most salacious
27  VI,  22|      observed in regard to the sexes of the human species; and
28  VI,  22|   which intercourse of the two sexes cannot take place; and accordingly
29  VI,  23|             23~The ass of both sexes is capable of breeding,
30  VI,  27|       the commerce between the sexes. The female settles down
31  VI,  35|      of the newborn young. The sexes couple at one special period,
32  IX,  1 |     characteristics of the two sexes. This differentiation is
33  IX,  1 | incubation, or to union of the sexes; in fact, it screams during
34  IX,  7 |       no other come nigh; both sexes co-operate in the process
35  IX,  7 |        distinguish between the sexes except by an examination
36  IX,  37|     after parturition; the two sexes are often taken linked together
37  IX,  50|      at the part where the two sexes unite in copulation. If