"Wait till she sees Bobby's knickers," chuckled Dora Lockwood. "You know Gee Gee always looks as though she wanted to put on blinders when she comes into the girls' gym."

Of course, these remarks were not passed in history class. But Dora was somehow inattentive just the same on this morning. She sat on one side of Hester Grimes and Dorothy on the other. The angry girl between the twins looked like a vengeful high priestess of Trouble--and Trouble appeared.

Miss Carrington asked Dora a direct question, speaking her name as she always did, and glaring at the twin in question near-sightedly, in an endeavor to see the girl's lips move when she answered. She was sure of Dora's seat; but, of course, she could not be sure whether Dora or Dorothy was sitting in it. Her refusal to accept the fact that the twins were on their honor kept Miss Carrington in doubt.

"Relate some incident, with date, in the life of Saladin, Dora," the teacher commanded.

Dora hesitated. This was a "jump question," as the pupils called it. Miss Carrington, as she frequently did, had gone back several lessons for this query, and Dora was hazy about Saladin.

"Come, Dora!" ejaculated the teacher harshly. "Have you no answer?"

Dorothy leaned forward to look across Hester's desk at her sister. She was anxious that Dora should not fail. She would have imparted, could she have done so, her knowledge of Saladin to her twin. But there was only nervous anxiety in her look and manner.

The moment Dora's lips opened and she began her reply, Hester turned sharply and stared at Dorothy. It was a despicable trick--a mean and contemptible attempt to get the twins into trouble. And Hester did it deliberately.

She knew that Miss Carrington was much more near-sighted than she was willing to acknowledge. Seeing Hester look at Dorothy caused the teacher to believe that Dorothy was answering for her sister.

"Stop!" commanded Miss Carrington, rising quickly from her seat on the platform.