"Oh, that's quite simple, sir; you get into the woman's ward either by the door on the staircase or by the door at the back, which leads into the laboratory of the head physician, the room of the house surgeon on duty, and the departmental offices."

"And how do visitors pass in?"

"Visitors always go up the main staircase."

"Now," said Juve, "show me over Doctor Patel's division."

"Very good, sir. It will be all the more interesting to you, as it is just the visiting hour."

When Juve made his way into the woman's ward, Doctor Patel was actually in process of seeing his patients. He was passing from bed to bed, questioning each of the women under treatment and listening to the comments of the house staff who followed him.

"Gentlemen," the doctor was saying as Juve joined the group, "the patient we have just seen affords a very excellent and typical instance of intermittent fever. The serum tests have not given any appreciable result; it is therefore impossible to arrive at——"

A hand was laid on Juve's shoulder.

"Why, the tests are always absolutely indicative! Palpable typhoid, eh? What do you think?"

Juve turned his head and could not suppress a cry of surprise.