“Name your condition,” she gasped.

“Can you, will you keep a secret?” he wrote.

“I will,” she answered.

“On your life and honour?” he wrote again.

“Yes, on my life and honour,” she answered, firmly, for a moment feeling re-assured by his change of manner.

He now wrote on the tablet.

“I am the slave of Colonel Blood; they call me Sinbad, and am supposed even by my master to be both deaf and dumb; but I am not.”

“Not deaf and dumb?” she answered. “Then you knew the sounds of the bell I rang?”

“I heard it,” he whispered, “and knew its meaning.”

“My meaning?” she asked.