From the ill success that attended the searching for fresh water, Lieutenant Cook called the inlet in which the ship lay Thirsty Sound.

No refreshment of any other sort was here procured by our voyagers.
Our commander, not having a single inducement to stay longer in this place, weighed anchor in the morning of the 31st and put to sea.

In the prosecution of the voyage, when the Endeavour was close under Cape Upstart, the variation of the needle, at sunset, on the 4th of June, was 9 deg.

east, and at sunrise the next day, it was no more that 5 deg.

35'.
Hence the lieutenant concluded, that it had been influenced by iron ore, or by some other magnetical matter contained under the surface of the earth.