She went inside of Martha's Vineyard, through Vineyard Sound, in company with a great fleet of coasters; but when they passed Gay Head, and turned to the westward into Long Island Sound, the Nancy was headed towards the lonely light-house on Montauk Point, the extreme end of Long Island.

From here her course was for the Cape May lightship on the New Jersey coast, and for some time she was out of sight of land.
So they sailed, day after day, ever southward, and towards the warmth which was to make Mr.Elmer well again.
Although Mark was very ill all this time, Ruth was as bright and well as though she were on land.

This was very mortifying to her brother; but "Captain Li," who went in to see him every day, comforted him by telling him of old sailors he had known who were always sea-sick for the first few days of every voyage they undertook.
The schooner was off Cape Hatteras before Mark felt able to leave his berth.

At last, one evening when the sea was very quiet, "Captain Li" said, "Come, Mark, I want you to turn out and go on deck to see the last of Hatteras Light.

You know Cape Hatteras is one of the worst capes along our entire Atlantic coast, and is probably the one most dreaded by sailors.