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 1 1 |    plant and what is called the mouth in animals, by means of
 2 3 | function in nutrition which the mouth has the faculty of performing,
 3 8 |     gills, air is formed in the mouth, for there can be no vacuum,
 4 8 |       the water surrounding the mouth by means of the vacuum formed
 5 8 |        the vacuum formed in the mouth, for he believes there is
 6 8 |       take the water into their mouth at the same time as they
 7 8 |        emit their breath by the mouth or the gills, and the result
 8 9 |     they draw in air out of the mouth or out of the water by means
 9 9 |       the water by means of the mouth is an impossibility, for,
10 9 |       closely juxtaposed to the mouth, so that they must do the
11 9 |         water by means of their mouth why should not men too and
12 9 |          draw in air out of the mouth. If in the former case it
13 11|         hot air issues from the mouth it pushes the surrounding
14 11|        back inwards through the mouth the air that had been discharged
15 11|         hot air out through the mouth and back again should be
16 13|      breathe either through the mouth or through the nostrils.
17 13|    extremity of the roof of the mouth is, some of the air going
18 13|   nostrils and some through the mouth, both when it enters and
19 15| respiring animal by holding its mouth, for then the lung causes
20 17|       in animals with lungs the mouth is employed both in working
21 17|      food passes in through the mouth; they have no windpipe and
22 22|    heads. But it is towards the mouth in fishes that the apex