"Therein lies its safety," the Prince answered.

"Perhaps only boyhood," said Loristan, "could have dared to imagine it."

"The Prince thanks you," he said after a few more words spoken aside to his visitor. "We both thank you. You may go back to your beds."

And the boys went.

XIX

"THAT IS ONE!"

A week had not passed before Marco brought to The Rat in their bedroom an envelope containing a number of slips of paper on each of which was written something.

"This is another part of the game," he said gravely. "Let us sit down together by the table and study it."

They sat down and examined what was written on the slips. At the head of each was the name of one of the places with which Marco had connected a face he had sketched. Below were clear and concise directions as to how it was to be reached and the words to be said when each individual was encountered.