“If it had it would certainly have been public by now.”
“But why should anyone take it in order to keep it in his house?”
“I am not convinced that anyone did take it.”
“Then how could it leave the despatch-box?”
“I am not convinced that it ever did leave the despatch-box.”
“ Mr. Holmes, this joking is very ill-timed. You have my assurance that it left the box.”
“Have you examined the box since Tuesday morning?”
“No. It was not necessary.”
“You may conceivably have overlooked it.”
“Impossible, I say.”
“But I am not convinced of it. I have known such things to happen. I presume there are other papers there. Well, it may have got mixed with them.”