But he could not have been far away, for he had to be producible at short notice whenever the death of Mrs.Wilson should make the production of his body necessary.

But if he was producible, his person must have been in the possession or control of John.

He could not have been at large, for that would have involved the danger of his being seen and recognized.

He could not have been in any institution or place where he would be in contact with strangers.

Then he must be in some sort of confinement.