It is an old round shot of our war hooker, La Casse de Par-Grand."

Which was in the Armada?"

Yes."

And which carried six hundred soldiers, fifty sailors, and twenty-five

guns?"

Shipwreck knows it."

How did you compute the resistance of the water to the shot?"

By means of a German scale."

Have you taken into account the resistance of the rope supporting the

shot to the waves?"

Yes."

What was the result?"

The resistance of the water was 170 pounds."

That's to say she is running four French leagues an hour."

And three Dutch leagues."

130

The Man Who Laughs