ant." Koch bit the end of one stubby thumb in hurried thought. He suddenly whipped open the door of one of the instrument cases, pulled out a stethoscope, and hooked the two little black receivers into his ears. Then he turned to Woodhouse.
"Quick! Off with your coat and open your shirt. You are a patient; I am just examining you when interrupted. This may be one of these clumsy English secret-service men, and I might need your alibi." The sound of an opening door beyond the folding doors and of footsteps in the adjoining room.
"You say you are sleepless at night?" Doctor Koch was talking English. "And you have a temperature on arising? Hm'm! This under your tongue, if you please"—he thrust a clinical thermometer between Woodhouse's lips; the latter already had his coat off, and was unbuttoning his shirt. Koch gave him a meaning glance, and disappeared between the folding doors, closing them behind him.
The captain, feeling much like a fool with the tiny glass tube sprouting from his lips, yet with all his faculties strained to alertness, awaited developments. If Doctor Koch's
