"The marks aren't all gone yet," continued Nicky, inspecting her brother anxiously. "Are you still peeling?"

"Yes—I think so," said Stiffy, groping for his cue.

"Ah!" Nicky nodded her head judicially. "We must give you a carbolic bath when we get you home."

The Westminster Gazette emitted a perceptible crackle.

"It will never do," pursued Nicky, getting into her stride, "to have you disfigured for life."

Stiffy, who was impervious to all reflections upon his personal appearance, grinned faintly. Opposite, a scared and bulging eye slid cautiously round the edge of The Westminster Gazette, and embarked upon a minute and apprehensive inspection of the plague-stricken youth. Nicky saw, and thrilled with gratification. She was on the point of continuing when the train dived into a tunnel. Having no desire that her schemes should go awry in the din, she waited.

The train came to a sudden and unexplained stop. Deathlike silence reigned, broken only by murmurs of conversation from next door. Presently in the gross darkness Nicky's voice was once more uplifted.

"By the way, is it infectious, or merely contagious? I meant to ask when I called for you at the Institute"—she was rather proud of that inspiration: an Institute sounded more terrifying and mysterious than a Hospital—"but in the excitement of that last fainting-fit of yours I forgot. Which is it?"

"Both, I think," said Stiffy, anxious to help.

"Ah! I feared as much. Still, things might be worse," commented Nicky philosophically. "So many of these complaints are infectious in the early stages, when no one suspects any trouble. Mumps, for instance, or scarlet fever. But others, like yours, are only dangerous in the convalescent stage, and then of course one knows exactly where one is."