the chemist that he was Dr. Castaing himself. An hour later Cas-
taing arrived at the shop of another chemist, Chevalier, with
whom he had already some acquaintance; he had bought acetate of
morphia from him some months before, and had discussed with him
then the effects of vegetable poisons. On this particular
morning he bought of his assistant thirty-six grains of acetate
of morphia, paying, as a medical man, three francs fifty centimes
for it instead of the usual price of four francs. Later in the
morning Castaing returned to Saint Cloud, a distance of ten miles
from Paris, and said that he had been out for a long walk. He
found Auguste ill in bed. Castaing asked for some cold milk,
which was taken up to the bedroom by one of the servants.
Shortly after this Castaing went out again. During his absence
Auguste was seized with violent pains and sickness. When
Castaing returned he found his friend in the care of the people
of the hotel. He told them to throw away the matter that had
been vomited, as the smell was offensive, and Auguste told them
to do as his friend directed. Castaing proposed to send for a
doctor from Paris, but Auguste insisted that a local doctor
should be called in at once.

Accordingly Dr. Pigache of Saint Cloud was summoned. He arrived
at the hotel about eleven o'clock. Before seeing the patient
Castaing told the doctor that he believed him to be suffering
from cholera. Pigache asked to see the matter vomited but was
told that it had been thrown away. He prescribed a careful diet,
lemonade and a soothing draught.

Dr. Pigache returned at three o'clock, when he found that the
patient had taken some lemonade, but, according to Castaing, had