its tip against the upper front teeth, forms of itself an inclined
plane, and--but stop! we are getting on too fast.

At the back of the mouth, (which is the antechamber, as we said before,)
is a sort of lobby, separated from the mouth by a little fleshy
tongue_let_, suspended to the palate, exactly like those tapestry
curtains which are sometimes hung between two rooms, under which one
is enabled to pass, by just lifting them up.

If this lobby led only from the mouth to the stomach, the act of
swallowing would be the simplest thing in the world; the tongue would
be raised, the pounded ball would glide on, would pass under the
curtain, and then good-bye to it. Unfortunately, however, the architect
of the house seems to have economized his construction-apparatus here.
The lobby serves two purposes; it is the passage from the mouth to the
stomach, as well as from the nose to the lungs.

The air we breathe has its two separate doors there--one opening
towards the nose, the other towards the lungs; through neither of which
is any sort of food allowed to pass. But, as you may imagine, the food
itself knows nothing of such spiteful restraints, and it is a matter
of perfect indifference to it through which of the doors it passes.
Not unlike a good many children who, though they are reasonable
creatures, will push their way into places where they have been
forbidden to go; and who can expect a pulpy food-ball to be more
reasonable than a child? It was necessary, therefore, so to arrange
matters that there should be no choice on the subject; that when the
food-ball got into the lobby it should find no door open but its own,
namely, that which led to the stomach. And that is exactly what is
done.