"You don't think she would go home without us, then?"
"Oh, no! I'm quite certain she wouldn't. Someone would miss us, and then she would ask who had seen us last."
"Do you think Kitty and Maud and Vera would tell? Perhaps they'd be ashamed of having left us."
"They'd be obliged to tell. I expect if it hadn't been for the fog we should have been found before. If you leant your head against me, could you go to sleep?"
"No, not with the water still so near," said Muriel, shuddering. "I must just sit still, and wait, and wait, and wait."
Half an hour more passed; the girls were too weary to care to talk, but at last Muriel spoke again.
"Patty," she said, suddenly, "I want to tell you a secret. It's something I ought to have told long ago, only I didn't dare. That Cæsar translation belonged to me."
"I thought it did," said Patty, calmly.
"You thought so! Oh, Patty! How did you know?"
"Because I saw you slip it into your desk that afternoon I came so unexpectedly into the schoolroom. I recognized the green cover the moment Miss Harper held it up."