In the scrub near this, we observed an Acacia, apparently new, a broadleaved, white-looking wattle. There was also a branching Composite, which Sir W. Hooker has determined to be a very distinct and undoubted species of FLAVERIA of which all the other species are natives of the New World.[*] The CAPPARIS LASIANTHA was also found here growing on EXOCARPUS APHYLLA of Brown; it was found by Allan Cunningham and Frazer on Liverpool Plains, also, at Swan River. Thermometer, at sunrise, 44 deg.; at noon, 95 deg.; at 4 P.M., 96 deg.; at 9, 63 deg.;--with wet bulb, 57 deg.. Height above the sea, 497 feet. [* FLAVERIA AUSTRALASICA (Hook. MSS.) foliis lineari-lanceolatis integerrimis basi dilatatis, capitulis densissime globoso-fasciculatis, fasciculis subinvolucratis, bracteis exterioribus praecipue fasciculos superantibus omnibus late amplexantibus.] 7TH APRIL.--When all were preparing to set off early this morning, I was informed that two bullocks were missing, and a third fast in the mud on the river bank. The two stray animals were soon found; but it was impossible to bring on the other in the mud, for he was blown, from having drunk too much water, after over-eating himself with grass. Our journey was continued round one angle of the river in my horse's track. Afterwards turning to the N. E., we crossed two miles of open forest land, where the grass was good, and having the river in sight. At length, even on an easterly course we could not keep it longer in view, but got involved in a scrub on soft red sand. Emerging from this on a course of E. S. E., we again got upon open ground, and soon saw the majestic trees of the river in a line circling round to the northward. Coming upon it at an angle where scrubs of rosewood and ACACIA PENDULA crowned the slopes, we encamped on a beautiful spot. The river was magnificent, presenting a body of water of such breadth, as I had only seen in one other river of Australia, and the banks were grassy to the water's edge.