country within fifty or sixty miles of the boundaries of the province,
and can speak with almost as much confidence of its absolute sterility as
if I had actually ridden over it. It would certainly be possible in the
wet season to take a small party from Prewitt's Springs across to this
hill of Sir Thomas Mitchell (distant about one hundred and sixty miles),
by carrying on water for eight or ten days; but no further supply might
be found short of the Darling (eighty miles beyond Mount Lyell), on which
river it would be madness to attempt anything without a considerable
force, on account of the natives; and the same point might be reached in
nearly as short a time, and with much more certainty, with any number of
men that might be considered necessary, by ascending the Murray as high
as the Laidley Ponds, and proceeding north from thence.

"On returning to the depot, I moved the party down to Mount Bryan, and
made another attempt on the 25th August, with Mr. Henderson, and one man
leading a pack-horse, to the north-east, hoping, from the heavy rains
which had fallen during the past two months, to find sufficient water in
the ravines to enable me to push on for several days. The second day, I
crossed the high range I had observed from the Black Rock Hills and Mount
Bryan, for the southern termination of which Colonel Gawler steered when
he left the northern bend of the Murray in December, 1839; but though
these hills had an elevation of twelve hundred or fourteen hundred feet
above the plain, there was no indication of rain having fallen there
since the deluge. This want of water prevented my proceeding further to
the north-east; but from the summit of the highest of these hills (Mount
Porcupine,) I had a clear view of the horizon in every direction, and a
more barren, sterile country, cannot be imagined.

"The direction of the dividing ridge between the basin of the Murray and
the interior desert plain was generally about north-east from the Black