The latitude of our tents at the head of Port Lincoln, from the mean of

four meridian observations of the sun taken from an artificial horizon, was
                                                    34 deg. 48’ 25” S.

The longitude, from thirty sets of distances of the sun and stars from the moon (see Table IV. of the Appendix to this volume), was
135 44 51” E.

These observations, being reduced to Cape Donington at the entrance of the port, will place it in latitude 34 deg. 44’ south,
          longitude 135 561/2’ east.

No corresponding observation of the solar eclipse appears to have been made under any known meridian, and from the nature of circumstances, the error of the moon’s place could not be observed at Greenwich; the distances would therefore seem most worthy of confidence, and are adopted; but the longitude deduced from the eclipse, as recalculated by Mr. Crosley from Delambre’s solar tables of 1806, and the new lunar tables of Burckhardt of 1812, differs but very little from them:  it is 135 deg. 46’ 8” east.

The rates of the time keepers, deduced from equal altitudes on, and between Feb. 27 and March 4, and their errors from mean Greenwich time, at noon there on the last day of observation, were found to be as under: 

Earnshaw’s No.543 slow Oh 30’ 30.54” and losing 8.43” per day.
              520 slow 1h 9’ 7.72” and losing 18.82” per day.

Arnold’s No. 176 altered its rate prodigiously on March 1st, and on the 2nd it stopped.  His watch, No. 1736, varied in its rate from 7.81” to 1.90”, so that it continued to be used only as an assistant.

The longitude given by the time keepers with the King-George’s-Sound rates, on Feb. 27, the first day of observation at the tents, was by

No. 543, 136 deg. 15’ 9.0” east.
    520, 135 58 53.55
    176, 136 1 23.95.

But by allowing a rate accelerating in arithmetic progression, from those at King George’s Sound to what were obtained at this place, the mean longitude by the two first time keepers would be 135” 52’ 16”, or 7’ 25” to the east of the lunar observations; which quantity, if the positions of the Sound and of Port Lincoln be correct, is the accumulation of their irregularity during fifty-seven days.  In laying down the coasts and islands from the Sound up to Cape Wiles, the longitudes are taken from the time keepers according to the accelerated rates, corrected by an equal proportion of the error 7’ 25” in fifty-seven days.  From Cape Wiles to the head of Port Lincoln the survey is made from theodolite bearings and observed latitudes, without the aid of the time keepers.

The Dip of the south end of the needle, taken at the tents, was nearly the same as in K. George’s Sound, being 64 deg. 27’ Variation of the theodolite at the same place, 1 39 E. And the bearings from different stations in the port were conformable to this variation, except at Cape Donington, where, at a station on the north-western part, it appeared to be as much as 41/2 deg. east.