“Yes.”

“And you used two thousand tons of meli-melonite?”

“Yes.”

The three yes’s fell like blows of a sledge-hammer on J. T. Maston’s occiput.

“Then I conclude—” he said.

“What?” asked Barbicane.

“—That, as the experiment failed, the explosive did not give the projectile the necessary initial velocity!”

“Indeed!” said Captain Nicholl.

“And that your meli-melonite is only fit for pop-guns!”

Captain Nicholl started at the insult.