I stepped across, and applied my eye to the instrument. The specimen was, indeed, pretty in more than a technical sense. Mingled with crystalline grains of quartz, glassy spicules, and water-worn fragments of coral, were a number of lovely little shells, some of the texture of fine porcelain, others like blown Venetian glass.

THE SAND FROM THE MURDERED WOMAN'S PILLOW, MAGNIFIED 25 DIAMETERS.

"These are Foraminifera!" I exclaimed.

"Yes."

"Then it is not silver sand, after all?"

"Certainly not."

"But what is it, then?"

Thorndyke smiled. "It is a message to us from the deep sea, Jervis; from the floor of the Eastern Mediterranean."

"And can you read the message?"