with his fleet.

8. Then the Rhodians, freed from the war by the cunning of Diognetus,
thanked him publicly, and decorated him with all honours and
distinctions. Diognetus brought that helepolis into the city, set it up
in a public place, and put on it an inscription: "Diognetus out of the
spoils of the enemy dedicated this gift to the people." Therefore, in
works of defence, not merely machines, but, most of all, wise plans must
be prepared.

9. Likewise at Chios, when the enemy had prepared storming bridges on
their ships, the Chians, by night, carried out earth, sand, and stones
into the sea before their walls. So, when the enemy, on the next day,
tried to approach the walls, their ships grounded on the mound beneath
the water, and could not approach the wall nor withdraw, but pierced
with fire-darts were burned there. Again, when Apollonia was being
besieged, and the enemy were thinking, by digging mines, to make their
way within the walls without exciting suspicion, and this was reported
by scouts to the people of Apollonia, they were much disturbed and
alarmed by the news, and having no plans for defence, they lost courage,
because they could not learn either the time or the definite place where
the enemy would come out.

10. But at this time Trypho, the Alexandrine architect, was there. He
planned a number of countermines inside the wall, and extending them
outside the wall beyond the range of arrows, hung up in all of them
brazen vessels. The brazen vessels hanging in one of these mines, which
was in front of a mine of the enemy, began to ring from the strokes of
their iron tools. So from this it was ascertained where the enemy,
pushing their mines, thought to enter. The line being thus found out, he
prepared kettles of hot water, pitch, human excrement, and sand heated
to a glow. Then, at night, he pierced a number of holes, and pouring the
mixture suddenly through them, killed all the enemy who were engaged in
this work.

11. In the same manner, when Marseilles was being besieged, and they
were pushing forward more than thirty mines, the people of Marseilles,
distrusting the entire moat in front of their wall, lowered it by
digging it deeper. Thus all the mines found their outlet in the moat. In
places where the moat could not be dug they constructed, within the
walls, a basin of enormous length and breadth, like a fish pond, in
front of the place where the mines were being pushed, and filled it from
wel