You don't know that he administered the poison--if poison has really been administered--and you cannot give any reliable name or any address whatever.

Then there is the question of sleeping sickness.
You reject it for medical purposes, but you could not swear, in a court of law, that this is not a case of sleeping sickness." "No," I admitted, "I could not." "Then I think the police would decline to move in the matter, and you might find that you had raised a scandal in Dr.Stillbury's practice to no purpose." "So you think I had better do nothing in the matter ?" "For the present.

It is, of course, a medical man's duty to assist justice in any way that is possible.

But a doctor is not a detective; he should not go out of his way to assume police functions.

He should keep his eyes and ears open, and, though, in general, he should keep his own counsel, it is his duty to note very carefully anything that seems to him likely to bear on any important legal issues.