"I think you are on the wrong trail, sir," answered Mr. Merrick. "Doubtless you have been misled by a casual resemblance, coupled with the fact that Andrews is suspected of stealing pearls and Jones is known to possess pearls--the pearls being of rare worth in both cases. Still, you are wrong. For instance, if you have the weight and measurement of the Tremloe black pearl, you will find they do not fit the pearl I am now wearing."