Book,  Paragraph

 1   I,  12|        whenever the testes are visible, they have a cuticular covering
 2  II,  1 |       of the parts are clearly visible as already existing in the
 3  II,  1 |        small that they are not visible is clear, for the lung is
 4  II,  2 |       and the smaller and less visible the bubbles in it, the whiter
 5  II,  6 |   external. The greater become visible before the less, even if
 6  II,  6 | through the passages which are visible running from them to the
 7 III,  2 |     still small. It is plainly visible in small aborted eggs, for
 8 III,  11|         nothing of the sort is visible. (The details concerning
 9  IV,  6 |     but small, and in some not visible at all, but in women it
10   V,  1 |      other animals this is not visible. The reason of this is that
11   V,  1 |    then is it that there is no visible change in the other animals
12   V,  1 |      moved by the light and by visible objects in respect of their
13   V,  1 |  garment even small stains are visible, so also in a pure sight
14   V,  3 |      grow old, but this is not visible in practically any other