At 8.15 left camp to go to the fine waterhole at the junction of a creek
from the west, which I have named Campbell's Creek, with Clifton Creek.
At 8.48 made one mile and a half south-west by south. At 9 made half a
mile south-south-west to tracks made, when Fisherman and I returned to
Number 17 Camp. At 9.45 made two miles south-east down to Clifton Creek.
At 10.10 made one mile south-east down the creek to where we formed our
18th camp. At the camp we had a severe thunderstorm which lasted for
about four hours. At the two previous camps Mr. Allison made observations
of the sun with the plains for a horizon, which were very satisfactory,
as the latitude obtained was nearly the same as that of my dead
reckoning, also nearly the same as the latitude made with the
observations of the stars Aldebaran and Castor with an artificial horizon
at Number 16 Camp. Observations taken at Camp 16: Aldebaran 19 degrees 14
minutes 21 seconds; ditto Castor 19 degrees 24 minutes 30 seconds; ditto
Sun 19 degrees 24 minutes 30 seconds; ditto dead reckoning 19 degrees 24
minutes. At Camp Number 17 about two miles southward from Camp 16: Sun 19
degrees 26 minutes 47 seconds. At Camp Number 20: Sun dead reckoning
nearly the same 19 degrees 37 minutes.

Tuesday December 17. Camp Number 18. Situated on Clifton Creek.

Left camp at 7.32. At 8.15 made two miles south to dry creek from
south-west, where we were delayed till 8.32; at 8.50 made three-quarters
of a mile south to the plain; at 10.45 made five miles and a half south
to a watercourse which I have named Darvall Creek: at 11.10 made
three-quarters of a mile west by south up the creek; at 11.32 made one
mile south-west by south; at 11.48 made three-quarters of a mile
south-west by south; at 12.8 made three-quarters of a mile south-west
where we crossed the creek; at 12.13 made quarter of a mile south-west to
junction of creek; at 12.35 made one mile west-south-west to left bank of