Now Mary had never been to London in her life.

The very idea of going to that vast unknown metropolis half scared her, and she sat for some minutes, with the sealed packet in her lap, quite confused and troubled.
"Yet I made the promise!" she said to herself--"And I dare not break it! I must go.

And I must not tell Angus anything about it--that's the worst part of all!" She gazed wistfully at the packet,--anon she turned it over and over.

It was sealed in several places--but the seal had no graven impress, the wax having merely been pressed with the finger.
"I must go!" she repeated.

"I'm bound to deliver it myself to the man for whom it is intended.