"She's very pretty and sweet, isn't she?" continued Prudence.

"Yes, very," agreed Lark without any enthusiasm.

"Such pretty hair," added Carol dispassionately.

"She must be very popular with the scholars," suggested Prudence.

"Yes, most of them are fond of her," assented Lark.

"She has rather winsome manners, I think," said Carol.

"Which of your professors do you like best?" queried Prudence.

"Duck," they answered unanimously, and with brightening faces.

"Why?"

"Because he is a duck," said Carol, and they all laughed. But Prudence
returned to the charge without delay.

"Do you like Miss Allen?" She was going through these questions with
such solemnity that the twins' suspicions had been aroused right at the
start. What had Miss Allen told their sister? Again that significant
flash from twin to twin.

"She certainly has very likeable ways," said Lark shrewdly.

"But do you like her?" insisted Prudence.