1803.
October.
Monday 10.
with these he took a short letter to the secretary of the Admiralty, and one to the Victualling Board inclosing such vouchers as had been saved from the wreck. To Mr. Inman I gave the remaining instruments belonging to the Board of Longitude, reserving only a time keeper and a telescope; the large and most valuable instruments had very fortunately been delivered to him before we had sailed from Port Jackson in the Porpoise.
These matters being arranged, I pressed captain Cumming to depart, fearing that a change of wind might expose the Rolla to danger; but finding him desirous to take off more provisions and stores, I made sail for a bank or rather islet seven miles distant, at the eastern extremity of Wreck Reef, for the purpose of collecting sea-birds eggs, and if possible taking a turtle. The Rolla joined on the following day,Tuesday 11. and I went on board to take leave of Messrs. Fowler and Flinders and the other officers and gentlemen; at noon we parted company with three cheers, the Rolla steering north-eastward for China, whilst my course was directed for Torres' Strait.
With the time keeper, Earnshaw's No. 520, I had received from lieutenant Flinders an account of its error from mean Greenwich time at noon there Oct. 6, and its rate of going during the fourteen preceding days, which were as under.
No. 520, slow 0ʰ 9′ 49″,35 and losing 34″,13 per day.
The latitude of Wreck-Reef Bank was ascertained from eight meridian observations from the sea, and four from an artificial horizon: the mean of the latter, which are considered the best, is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
22° | 11′ | 23″ S. |
Longitude from sixty sets of lunar distances, of which the individual results are given in Table VIII. of the Appendix No. I. to this volume, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
155 | 18 | 50,5 E. |
