CHAPTER 1.3.
Sail on our Second Northern Cruise.
Entrance to the Inner Passage.
Arrive at Rockingham Bay.
Land Mr.Kennedy's Expedition.
Commence the Survey at Dunk Island.
Communication with Natives.
Barnard Isles.
Botanical Sketch.
Examine a New River.
Frankland Isles.
Find the Coconut Palm.
Fitzroy Island.
The Will-o-the-Wisp and her Story.
Trinity Bay.
Animals of a Coral Reef.
Stay at Lizard Island.
Howick, Pelican, and Claremont Isles.
Bird Isles.
Meet party of Natives in Distress.
Cairncross Island.
Arrive at Cape York.
SAIL ON SECOND NORTHERN CRUISE.
April 29th.
The season for passing through Torres Strait from the southward having arrived, we left Port Jackson on a ten-months cruise, in order to complete the survey of the Inner Passage, or the clear channel between the north-east coast of Australia and the inner edge of the outer reefs, which again are bounded to seaward by the Great Barrier Reef, stretching from north to south, for a distance of upwards of 1000 miles.
In the evening we were joined by the Tam O'Shanter, a barque having on board a colonial overland expedition under Mr.Kennedy, which we are to accompany to Rockingham Bay, 1200 miles north from Sydney, where we are to assist in the disembarkation and starting of the party.
For the first nine days we averaged only thirty miles a day, owing to a long continuance of calms and light winds with a strong adverse current, which on one occasion set us to East-South-East fifty-three miles in twenty-four hours.

At length, on May 8th we picked up a strong southerly breeze, accompanied by a northerly set.

On May 12th we rounded Breaksea Spit, and Captain Stanley finding his original intention of passing inside of Lady Elliot's Island impracticable, or at least involving unnecessary delay, determined to bear up North-West by West keeping outside of the Bunker and Capricorn Groups, and try the channel previously passed through by Captain F.P.Blackwood in H.M.S.

Fly.
Captain Stanley's remarks on this subject are so important, that I give them verbatim: ENTRANCE TO THE INNER PASSAGE.
"After reaching Lady Elliot's Island, we steered a course direct for the High Peak of the Northumberland Islands, so as to pass between Bunker's Group and Swain's Reef, which affords a far better entrance into the Inner Passage, than the old route round Breaksea Spit inside the Bunker Group; when the course requires to be changed, and the channel is much narrower.

We sounded every half hour without finding bottom, with from 80 to 120 fathoms, till we came to the soundings laid down by the Fly, which we found to agree almost exactly with ours.
"Our soundings were obtained by using Massey's patent lead, with which we found we could reach the bottom at twenty-six fathoms, when the ship was going 9.2 knots an hour; and with such a guide any error in the reckoning would be detected, even by night, as the Bunker Group gives warning by the soundings.