"Good afternoon, Mock Hen! You are early to-day."

Mock took her hand and stroked it affectionately.

"I go Fulton Mark' buy li'l' terrapin. Stop in on way to see dear Miss Fan'."

They stood thus for a moment, and while they did so the clock struck four.

"I go now!" said Mock suddenly. "Four o'clock already."

"It's early," answered Miss Fanny. "Won't you stay a little while?"

"I go now," he repeated with resolution. "Good-by li'l' teacher!"

She watched until his lithe figure passed through the door, and presently returned to the back room. Mock waited outside until she had disappeared.

Then he changed back the clock.