in in the
country to which we were returning. We came to the channel of the main
river, after proceeding about three miles in the direction of a turn in
our route beyond next camp. The channel here was broad, and occasionally
filled with a good body of water. The bed was sandy, and in it grew a
tree with thin loose white bark, resembling that of the mimosa or tea-
tree of the colony; some of these trees were of large dimensions. There
also grew, in the sandy bed of this river, a new white-flowered
MELALEUCA, resembling M. ERICIFOLIA, but with long mucronate leaves[*];
and, in the scrubby bank the STENOCHILUS BIGNONIOEFLORUS formed a willow-
like shrub fifteen feet high. We again came came upon our track where I
intended to hit it, although we had been retarded by brigalow scrub. We
thus left Camp LXIV. on the left, and finally again pitched our tents at
that of LXIII. Thermometer, at sunrise, 58 deg.; at noon, 65; at 4 P.M., 63 deg.;
at 9, 63 deg.;--with wet bulb, 57 deg..

[* M. TRICHOSTACHYA (Lindl. MS.); folsaepius oppositis linearibus planis
utrinque acutissimis, spica terminali laxiuscula rachi pilosa, calyce
glabro dentibus herbaceis, phalangibus polyandris ungue petalis
breviore.]

17TH AUGUST.--The ground was covered in many parts with a lichen, the
product of the late rain, and which had no root in, nor attachment to,
the soil, but could be collected in handfuls, and lay quite loose in
heaps, or rather in a thick layer. I could not comprehend the origin of
this singular vegetable production, which might then have been gathered
in any quantity. The day was cool, cloudy, and pleasant. Fine round
clouds driving still from the eastward, with a high barometer (for this
of Bunten stood seven millimetres higher, than it did when we had been
formerly encamped on the same ground). On recrossing the great river from
S. W., we found more of the pea with large pods, it seemed to grow only
on the dry sand of the river bed. This was a most interesting river, and
I could have wished much to have explored it upwards, had the state of my
horses and provisions permitted. On its banks we had discovered various
rare trees and plants seen by us nowhere else; and the pea just
mentioned, which had, as Mr. Stephenson thought, valuable qualities as a
laxative medicine. The bed of the river was broad and sandy; the banks
were quite clear of brigalow or other scrubs, level, open, and in most
parts covered with luxuriant anthistiria and