What do you make of that ?" "I don't quite know.

Do you think he is really a medical man ?" "Perhaps we had better finish our investigation, in case we are disturbed, and discuss the bearings of the facts afterwards.

The name of the sender may be on the flap of the envelope.

If it is not, I shall pick the lock and take out the letter.

Have you got a probe about you ?" "Yes; by force of habit I am still carrying my pocket case." I took the little case from my pocket and extracting from it a jointed probe of thickish silver wire, screwed the two halves together and handed the completed instrument to Thorndyke; who passed the slender rod through the grille and adroitly turned the letter over.
"Ha!" he exclaimed with deep satisfaction, as the light fell on the reverse of the envelope, "we are saved from the necessity of theft--or rather, unauthorized borrowing--'Johann Schnitzler, Darmstadt.' That is all that we actually want.