That is a useful piece of information.

Then we learn that Mrs.Schallibaum has remained in England; which might be of little importance if it were not for a very interesting corollary that it suggests." "What is that ?" "I must leave you to consider the facts at your leisure; but you will have noticed the ostensible reason for her remaining behind.

She is engaged in puttying up the one gaping joint in their armour.

One of them has been indiscreet enough to give this address to some correspondent--probably a foreign correspondent.

Now, as they obviously wish to leave no tracks, they cannot give their new address to the Post Office to have their letters forwarded, and, on the other hand, a letter left in the box might establish such a connection as would enable them to be traced.