hands, we are like those strongholds whose angles and different thicknesses have been ascertained by a spy.”

“In truth, my dear Porthos, you possess ideas entirely original.”

“Ah! you see when a man is an engineer — ”

“And has fortified Belle-Isle — ’tis natural, my friend.”

“Well, I had an idea, which would doubtless have proved a good one, but for Mouston’s carelessness.”

D’Artagnan glanced at Mouston, who replied by a slight movement of his body, as if to say, “You will see whether I am at all to blame in all this.”

“I congratulated myself, then,” resumed Porthos,