“It wasn’t me what did it, sir,” said William indignantly.

“Two hundred,” said Mr. Courtnay.

Well!” gasped William in outraged innocence.

“Four hundred,” said Mr. Courtnay.

William was too infuriated to reply. He angrily mixed two liquids from the nearest bottles and heated them over his bunsen burner to relieve his feelings. There was a loud report. William blinked and wiped something warm off his face. His hand was bleeding from the broken glass.

Mr. Courtnay watched from a distance.

“Six hundred,” he said as William took a bit of test tube from his hair, “and to be done before Saturday, please.”

“Don’t do ’em,” said Ginger as he walked homeward with William.

“Yes,” said William bitterly, “an’ that means go to the Head an’ you know what that means.”

“Well, Douglas ’n Henry ’n me’ll all help,” said Ginger.