Book,  Paragraph

 1   I,  1 |         of its essence (and these two we may regard pretty much
 2   I,  1 |          animal which possess the two sexes. This is not the case
 3   I,  1 |     walking, we find in these the two sexes, not only in the sanguinea
 4   I,  2 |        semen is secreted from the two sexes, the secretion taking
 5   I,  3 |         and of serpents, but only two spermatic ducts. Others
 6   I,  3 |       internal near the loin, and two ducts from these in the
 7   I,  3 |          as the testes are always two in the male. It is situated
 8   I,  4 |          must be for one of these two reasons. But that it is
 9   I,  18|      parents alike, the result is two animals, for the offspring
10   I,  18|          is plainly in one of the two following senses that it
11   I,  18|   contraries, for then one of the two contraries ceases to be,
12   I,  18|    discover then, in which of the two other classes the semen
13   I,  18|   condition is due to each of the two causes, weakness and strength;
14   I,  19|     foetus is a single mixture of two semens, or whether no semen
15   I,  19|           it is not possible that two such discharges should be
16   I,  19|          than by the male and the two sexes reach their goal together,
17   I,  20|           is when they have risen two fingers’ breadth that the
18   I,  20|          for twin eggs are really two eggs). But in whatever kinds
19   I,  20|          these powers separate in two sexes the body and nature
20   I,  21|   whenever one thing is made from two of which one is active and
21  II,  1 |           of the existence of the two sexes. Some animals bring
22  II,  1 |      needs be one or other of the two. We must try, then, to solve
23  II,  3 |          this principle there are two kinds; the one is not connected
24  II,  4 |           nor from a union of the two) produce an offspring which
25  II,  4 |          uterus in the female—the two blood-vessels, the great
26  II,  4 |     Nature has first designed the two blood-vessels from the heart,
27  II,  6 |         and so the eyelids become two instead of one. Of course
28  II,  6 |           admits of division into two classes, (1) the origin
29  II,  6 |      triangle are always equal to two right angles, or that the
30  II,  6 |     nutriment may be divided into two kinds, the first and the
31  II,  7 |        like, one in the smallest, two in those of intermediate
32  II,  8 |        becomes dense, each of the two seminal fluids out of which
33  II,  8 |          mule of horse and ass in two ways according as the parents
34  II,  8 |         the facts peculiar to the two kinds concerned, horse and
35 III,  1 |        are in the habit of laying two for the most part, for they
36 III,  1 |          even that sometimes lays two) nor yet many, but they
37 III,  1 |           they frequently produce two, or three at the most generally
38 III,  1 |       three at the most generally two, for this number lies between
39 III,  1 |           much, so as even to lay two eggs in a day, have died
40 III,  1 |          the power of each of the two parts, the white and the
41 III,  1 |       which will come each of the two parts, alike that whence
42 III,  1 |          one colour and others of two.~
43 III,  2 |  leguminous plants, for where the two cotyledons of beans and
44 III,  2 |        eggs, for often one of the two becomes rotten, and the
45 III,  2 |          been marked off from it, two umbilical cords run from
46 III,  5 | distinction obtains in all except two, the erythrinus and the
47 III,  6 |        says that the trochus, has two pudenda, those of the male
48 III,  8 |      squids the eggs appear to be two, because the uterus is divided
49 III,  10|          all kinds of animals the two sexes differ. Besides they
50 III,  10|  intermediate in size between the two other kinds, for this is
51 III,  11|         came into being in one of two ways; that either it was
52 III,  11|         to have been one of these two, scolex or egg. But it is
53  IV,  1 |           the uterus. For suppose two animals already moulded
54  IV,  1 |        would be the better of the two, at least as far as this
55  IV,  1 |        and the combination of the two becomes male or female according
56  IV,  1 |   compared with each other in the two sexes is only a concomitant
57  IV,  1 |          a higher degree, and the two sexes correspond in this
58  IV,  3 |      female in the mixture of the two elements, either through
59  IV,  3 |  individual is the more so of the two, for this is the only true
60  IV,  3 |        and the change is into the two opposites; now is opposed
61  IV,  3 |        others actually), but also two others, that if a character
62  IV,  3 |          their parents. They give two versions of the reason.
63  IV,  3 |           like that parent of the two from whom comes more semen,
64  IV,  3 |     reduced all faces to those of two or three animals, and his
65  IV,  4 |       monstrosities arose because two emissions of seminal fluid
66  IV,  4 |        separated by the membrane, two separate chickens are produced
67  IV,  4 |           also been observed with two heads for the same reason,
68  IV,  4 |          without a spleen or with two spleens or with one kidney;
69  IV,  4 |     smaller, and some between the two, and speaking generally,
70  IV,  4 |           kind of animal has one, two, or many toes. A proof of
71  IV,  4 | cotyledons are more than one. For two embryos are often formed
72  IV,  4 |          it dash against anything two systems or eddies come into
73  IV,  4 |       instance some monsters have two spleens or more than two
74  IV,  4 |          two spleens or more than two kidneys. Further, the parts
75  IV,  4 |       more than one heart will be two animals grown together through
76  IV,  5 |          time elapses between the two impregnations, if their
77  IV,  6 |       cloven-footed either one or two generally speaking; now
78  IV,  6 |     sometimes only one, sometimes two, but generally many, and
79  IV,  10|            they carry their young two years on account of their
80   V,  1 |           the objects seen. These two faculties are not necessarily
81   V,  3 |          dried. Of this there are two causes, quantity and quality;
82   V,  4 |        the head being between the two extremes is exempt from
83   V,  7 |        the older, nor yet are the two sexes thus opposed, and