hen the direction of the
instrument was changing, the needle remained quite stationary, the south
end of the needle pointing to the north, until the change was effected;
it remained in this position for two seconds of time, and then suddenly
shifted to the opposite, its proper, direction; its movements were,
however, very sluggish and irregular in its shifting end for end. The day
was so rainy that no observation could be made for the variation of the
compass.

March 1 : At Sea : 10 1 South : 11 31 West : 3 32 1/2 : North : 17 44
West : -.

March 2 : At Sea : 8 21 South : 12 57 : 6 50 : North : 18 00 : -.

March 5 : At Sea : 7 3 South : 15 42 : 11 22 1/2 : North : 16 5 : -.

March 7 : At Sea : 4 17 South : 18 50 : 19 15 : North : 13 18 : -.

March 9 : At Sea : 0 0 1/3 South : 22 6 1/4 : 27 45 : North : 12 51 : -.

March 24 : At Sea : 17 4 North : 35 40 : 54 23 3/4 : North : 11 3 :
Correct to 3/4 degree.

March 31 : At Sea : 29 33 North : 38 35 : 65 25 : North : 10 59 : Correct
to 1 degree.

...

APPENDIX A. SECTION 10.

UPON THE GEOGRAPHICAL POSITIONS OF THE FIXED POINTS OF THE SURVEY.

The observations for determining the longitudes of the various parts of
the coast were taken with a circle and a sextant by Troughton: besides
these valuable instruments we had three chronometers of Arnold's make,
namely, 413 (box) 2054 (pocket) and 394 (pocket); of which the two first
were supplied by the Admiralty. At the end of the fourth year, in
consequence of 394 having stopped, a fourth chronometer, made by
Parkinson and Frodsham (Number 287 box) was purchased in the colony, and
proved to be a most excellent watch.

The situations of the following places, which were either fixed by us or
adapted from other authorities, served as the basis of the chronometrical
determination of the longitudes of the intermediate parts.

The flagstaff of FORT MACQUARIE on the north-east head of Sydney Cove in
PORT JACKSON (the Cattle Point of Flinders, and otherwise Bennelong
Point) is in latitude 33 degrees 51 minutes 28 seconds South and
longitude 151 degrees 15 minutes 26 East, being, according to the ensuing
table, the mean of all the observations that have been taken.

Latitude (in degrees minutes seconds) observed by:

Captain Flinders, in 1795 and 1802: 33 51 45.6.
De Freycinet in 1802: 33 51 21.
King (reduced) 1817: 33 51 18.
Sir T. Brisbane (reduced) 1822: 33 51 30.

Mean Latitude of Fort Macquarie 33 51 28.

Longit