"The recovery is rather comparative.

He is lucid and fairly natural in his manner, but he is still dull and lethargic.

He does not, for instance, show any desire to go out, or even to leave his room." I pondered uncomfortably on these rather contradictory statements.
Clearly Mr.Weiss did not mean to entertain the theory of opium poisoning; which was natural enough if he had no knowledge of the drug having been used.

But still-- "I suppose," said Mr.Weiss, "you have experience of sleeping sickness ?" The suggestion startled me.

I had not.