range to rich well-grassed plains.  At 1.33 made one mile north-west to a creek with empty deep holes.  At 2.10 made two miles north-west to Clifton Creek, where we had breakfast, and started again at 3 up the Clifton Creek.  At 3.15 made three-quarters of a mile north-west up the creek to where we crossed to left bank and left it.  At 3.50 made one mile and three-quarters north-west over a fine downs ridge covered with green grass.  At 4.15 made one mile north-north-west to outward track on right bank on the Pratt Creek.  At 4.45 made one and a quarter mile north-east and at 5 made three-quarters of a mile north-east in the direction of Number 16 Camp.  At 5.9 made quarter of a mile north by east to creek.  At 5.17 made quarter of a mile north over a barren desert grass ridge.  At 5.30 made one mile and a half to Number 16 Camp.  At 5.40 we left Number 16 Camp to go two and a half miles south-west by south to where our companions had formed Number 17 Camp in our absence.

Monday December 16.  Camp Number 17.  Situated on Pratt Creek.

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