f the cornea by the flame of the torch
was the cause of the blindness. In the work which led him to the
discovery of the retina in the eye he had devoted himself sedulously to
the organs of sight. This case seemed as if it had been created for his
friend's keen knife.

What expectations this assurance aroused in the half-cured man, who felt
as if the goal was already gained, when, shortly after, Erasistratus, the
greatest physician of his time, offered to make the attempt in Alexandria
to remove, by a few little incisions, what still dimmed his impaired
vision!

Hermon, deeply agitated, thanked the leech, and when Thyone perceived
what was passing in his mind she ventured to ask the question whether it
would not be feasible to perform the beneficent work here, and, if
possible, the next day, and the surgeon was ready to fulfil the wish of
the matron and the sufferer speedily. He would bring the necessary
instruments with him. It only depended upon whether a suitable room could
be found in the crowded city, and Thyone believed that such a one could
not be lacking in the great building at her disposal.

A short conversation with the steward confirmed this opinion.

Then Erasistratus appointed the next morning for the operation. During
the ceremony of consecrating the temple it would be quiet in the house
and its vicinity. The preliminary fasting which he imposed upon his
patients Hermon had already undergone.

"The pure desert air here," he added, "will be of the utmost assistance
in recovery. The operation is slight, and free from danger. A few days
will determine its success. I shall remain here with their Majesties,
only"--and here he hesitated doubtfully--"where shall I find a
competent assistant?"

Herophilus looked his colleague in the face with a sly smile, saying, "If
you credit the old man of Chalcedon with the needful skill, he is at your
disposal."

"Herophilus!" cried Thyone, and tears of emotion wet her aged eyes, which
easily overflowed; but when Hermon tried to give expression to his
fervent gratitude in words, Erasistratus interrupted him, exclaiming, as
he grasped his comrade's hand, "It honours the general in his purple
robe, when he uses the spade in the work of intrenchment."

Many other matters were discussed before the professional friends
withdrew, promising to go to work early the next morning.

They kept their word, and while the temple of the god Turn resounded with
music and the chant