Danny, seeing the success of his trick, walked off as he saw Mr. Tetlow coming. The Bobbsey twins were so intent on spurting the water that they did not observe the principal until he was close to them. Then they started as he called out sharply:
"Freddie! Flossie! Stop that! You know that it is forbidden! Go to my office at once and I will come and see you later, You will be punished for this!"
With tears in their eyes the little twins obeyed. They could not understand it.
CHAPTER XII
THE CHILDREN'S PARTY
When Mr. Tetlow, a little later, entered his office he found Flossie and Freddie standing by one of the windows, looking out on the other children marching to their classrooms. They had cried a little, but had stopped now.
"I am very sorry to have to punish you two twins," said the principal, "but I had given strict orders that no one was to play with that water. Why did you do it?"
"Because," answered Flossie.
"Danny Rugg told us to," added Freddle. "He said it was a new kind of faucet."
"Now be careful," warned Mr. Tetlow. Often before he had heard pupils say that someone else told them to break certain rules. "Are you sure about this?" he asked.