does its utmost to drive it back through the door. Then the lungs,
which would be destroyed by its getting to them, come to the assistance
of the faithful servant who is struggling for their protection: they
agitate themselves violently, and send forth gusts of air which drive
all before them. Thence arises the cough, and by this means at last
the enemy is thrust out of the mouth, like dust before the wind. And
it is only when the passages are cleared that the storm subsides. But
the commotion is no laughing matter, I assure you; for if one had
swallowed a little _too far_ the wrong way, or if the substance
swallowed had been too heavy for the air-tube, aided by the lungs, to
eject within a certain time, death would have ensued: instances of
which are by no means unknown. Nature does nothing in vain; this is
no case of a man frightened by a mouse. When you find your whole being
concentrating its efforts to one point, and betraying such distress,
at an accident apparently so trifling, you may be sure there is danger,
and real danger too; and if you doubt it, that makes no
difference--happily for you.

Now you have learned why little girls should not attempt to talk and
swallow at the same time, and, I may add, still less laugh; for
laughingis a kind of somersault, performed by the lungs, and is always
accompanied by the ejectment of a great deal more breath than is
necessary in speaking, so that the jerks it occasions derange still
more the wise provisions made to protect life whenever we swallow
anything, and therefore we are more apt to swallow the wrong way while
laughing than while speaking.

Need I say that we ought equally to guard against making others laugh
or talk; or exciting, or frightening them, while they are swallowing;
in short, avoid doing anything to create a sudden shock which might