If the advertisement appeared isolated, all the better.

The real job would be to hide his identity.

He saw a way round this difficulty.

He wrote out six advertisements, all worded the same.
He figured out the cost and was delighted to find that he carried the necessary currency.

Then he got into his engineer's--dungarees, touched up his face and hands to the required griminess, and sallied forth.
Luck attended him until he reached the last morning newspaper on the list.