"I'm not so certain of that," Miss Ladd replied.
"Why not?" Katherine inquired, while several of the girls who were near looked curiously at the Guardian.
"Because I believe I have seen evidences of interest."
"You have!" exclaimed two or three unguardedly.
"Now, girls, you are forgetting yourselves," said Miss Ladd warningly. "Remember that the first requisite of skill in your work here is caution. The reason I didn't say anything to you about what I saw is that I was afraid some of you might betray your interest in the fact that we were being watched. I saw two girls half hidden in a clump of bushes up near the top of the hill. I am sure they were watching us. They were there at least half an hour."
CHAPTER XX
THE MISSILE.
Five of the members of the Camp Fire were present when Miss Ladd made this startling announcement that they had been watched secretly for a considerable time while roping off the limits of their swimming place. The other girls had taken the lead back to the camp and were a considerable distance ahead.
"Are they watching us yet?" Azalia asked.
"I think not," the Guardian replied. "I haven't seen any sign of them during the last twenty minutes."