new few men upon the mainland--in which she seemed to include the
larger island of Prince Edward--that Caius Simpson was the only medical
man of whom she had any personal knowledge who was at that time
unemployed. She stated, also, that upon the island where she lived there
were some hundreds of fisher-folk, and that a very deadly disease, that
she supposed to be diphtheria, was among them. The only doctor in the
whole group refused to come to them, because he feared to take back the
infection to the other islands. Indeed, so great was the dread of this
infection, that no helpful person would come to their aid except an
English priest, and he was able only to make a short weekly visit. It
was some months now since the disease had first appeared, and it was
increasing rather than diminishing.

"Come," said the letter, "and do what you can to save the lives of these
poor people--their need of you is very great; but do not come if you are
not willing to risk your life, for you will risk it. Do not come if you
are not willing to be cut off from the world all the months the ice lies
in the gulf, for at that time we have no communication with the world.
You are a good man; you go to church, and believe in the Divine Christ,
who was also a physician. It is because of this that I dare to ask you.
There is a schooner that will be lying in the harbour of Souris for two
or three weeks after the time that you receive this letter. Then she
will come here upon her last winter trip. I have arranged with the
captain to bring you to us if you can come."

After that the name of the schooner and its captain was given, a list
also of some of the things that he would need to bring with him. It was
stated that upon the island he would receive lodging and food, and that
there were a few women, not unskilled in nursing, who would carry out
his instructions with regard to the sick.

Caius folded the letter after the second reading, finished his work with
the horses, and walked with his lantern through the now darkening air to
the house. Just for a few seconds he stopped in the cold air, and looked
about him at the dark land and the starry sky.

"I have now neither the belief nor the enthusiasm she attributes to me,"
said Caius.

When he got into the bright room he blinked for a moment at the light by
which his father was reading.

The elder man took the letter in his hard, knotted hand, and read it
because he was desired to do so. When fi