The longitude of the Sandwich Islands was determined by seventy-two sets of lunar observations; some of which were made while we were at anchor in the road of Wymoa; others before we arrived, and after we left it, and reduced to it by the watch or time-keeper. By the mean result of these observations, the longitude of the road is 200 deg. 13' 0" East. Time-keeper / Greenwich rate, 200 deg. 0' 0" \ Ulietea rate, 200 deg. 21' 0" The latitude of the road, by the \ mean of two meridian observations } 21 deg. 56' 15" North. of the sun / The observations for the variation of the compass did not agree very well among themselves. It is true, they were not all made exactly in the same spot. The different situations, however, could make very little difference. But the whole will be seen, by casting an eye on the following table. Time. Latitude. Longitude. Compass. East Mean variation. Variation. Jan. 18th. A.M. 21 deg. 12' 200 deg. 41' Gregory's 10 deg. 10' 10"\ Knight's 9 deg. 20' 5" } 90 deg. 51' 38" Martin's 10 deg. 4' 40"/ 19th. P.M. 21 deg. 51' 200 deg. 20' Knight's 10 deg. 2' 10"\ 10 deg. 37' 10" Gregory's 11 deg. 12' 30"/ 28th. A.M. 21 deg. 22' 199 deg. 56' Gregory's 9 deg. 1' 20"\ Knight's 9 deg. 1' 25" } 9 deg. 26' 57" Martin's 10 deg. 18' 5"/ 28th. P.M. 21 deg. 36' 199 deg. 50' Gregory's 11 deg. 21' 15"\ Knight's 10 deg. 40' 0" } 11 deg. 12' 50" Martin's 11 deg. 37' 50"/ Means of the} 21 deg. 29' 200 deg. 12' 10 deg. 17' 11" above } On January 18. 21 deg. 12' 200 deg. 41' the north end of the needle dipped 42 deg. 1' 7". The tides at the Sandwich Islands are so inconsiderable, that, with the great surf which broke against the shore, it was hardly possible to tell, at any time, whether we had high or low water, or whether it ebbed or flowed. On the south side of Atooi, we generally found a current setting to the westward, or north-westward. But when we were at anchor off Oneeheow, the current set nearly north-west and south-east, six hours one way and six the other, and so strong as to make the ships tend, though the wind blew fresh. This was certainly a regular tide; and, as far as I could judge, the flood came from the north-west.