anæmia due to vasomotor constriction. Success is only occasional, but this
is so welcome as to justify the habitual use of the method.

If the aura be brief, buy a few "pearls" of Amyl Nitrite, crush one in your
handkerchief, and sniff the vapour. This has the same affect as
nitroglycerin, but the action occurs in 15 seconds and only persists 7
minutes. A headache occasionally follows the use of these drugs, and they
should not be employed without professional advice.

When the warning is felt in the hand or foot, a strap should be worn round
the ankle or wrist, and pulled tight when the aura commences. This
sometimes aborts a fit, as biting a finger in which the aura commences may
also do.

If a victim feels unwell after a meal, he must never eat the next meal at
the usual time, simply because it _is_ the usual time.

Should a patient feel unwell between, say, dinner and tea, instead of
eating his tea he must empty his bowels by an enema, or croton oil (see
chemist), and his stomach by drinking a pint of warm water in which has
been stirred a tablespoonful of mustard powder and a teaspoonful of salt.
After vomiting, drink warm water.

_Never attempt to empty the stomach at the onset of a definite aura_, for
if the seizure occurs, the vomit will probably obstruct the trachea, and
suffocate the victim.

After the stomach has been empty ten minutes, the patient should take a
double dose of bromides (Chapter XIX) and go to bed. Next morning he will
be well, whereas if he eats but a single piece of bread-and-butter he will