Book,  Paragraph

 1   I,  8 |        in themselves they must needs be few in number, but as
 2   I,  11|  hypozoma, for the foetus must needs be heavy and move, and that
 3   I,  12|       the egg or foetus, which needs guarding, shelter, and maturation
 4   I,  12| reptiles, then the testes must needs be internal. Therefore they
 5   I,  18|       throughout the body must needs follow only a single secretion.
 6   I,  18|       what is called semen is. Needs must everything which we
 7   I,  20|     yet sifted thoroughly, but needs working up to purify it.
 8   I,  20|       question. For there must needs be that which generates
 9   I,  21|  offspring by herself, for she needs a principle, i.e. something
10  II,  1 |      external, and yet it must needs be one or other of the two.
11  II,  2 |   black, as if everything must needs be black in those who have
12  II,  4 |       gets nourishment; for it needs growth. So also in the embryo
13  II,  4 |    that the animal or organism needs nourishment, from that moment
14  II,  4 |        weakness of the vessels needs protection and shelter.
15  II,  4 |       it is separated the male needs the female besides.~
16  II,  5 |    material of the embryo, she needs the male besides instead
17  II,  5 |       And so the female animal needs the help of the male, for
18 III,  10|        in size. For there must needs be some overlapping unless
19  IV,  1 |      the moving principle must needs always be prior to that
20  IV,  1 |      the males of animals must needs be hotter than the females.
21  IV,  1 |        this respect, then must needs the material which it works
22  IV,  1 | principle is moved or affected needs must many of the parts that
23  IV,  4 |      Moreover, more semen must needs be used in generation by
24  IV,  6 |     periods, but the male must needs be too late or the female
25  IV,  6 |      reason is that its growth needs more nourishment than the
26  IV,  8 |      the one direction it must needs cease in the other, unless
27  IV,  10|     these or are in these must needs follow suit. For it is reasonable
28   V,  3 |    that the skin round it must needs have still less, and again