(*Footnote. A genus chiefly inhabiting the Cape of Good Hope, India, the Levant and North America, of which no species have before been published from Australia. I was subsequently fortunate enough to discover two more species of this genus; which with one as yet unpublished, found by Mr. Allan Cunningham in 1818 in the rocky islands of Dampier's Archipelago on the north-west coast, makes the number inhabiting Australia to be 4: all of which are remarkable for their resemblance to the North American form of the genus. The species we observed on this occasion was a small spreading herbaceous plant. P. patens, Lindley manuscripts; herbacea, pubescens, foliis pinnatim trifoliolatis, foliolis dentatis punctatis lateralibus oblongis obtusis intermedio ovato obtuso basi cuneato, racemo pedunculato laxo multifloro foliis multo longiore, bracteis subrotundis striatis obscure multipunctatis, ramis divaricatis.) March 20. We proceeded, crossing the channel near the cattle station where I learnt that it was joined immediately below by that which I had named King's creek on my last journey; also that water was abundant in it below the junction. Some natives joined us and Piper prevailed on one of them to be our guide, as far as he knew the country. The use of such a guide in following an unexplored watercourse is that bad places for the carts may be avoided, and the doubles of the stream cut off by the easiest routes. BREAK A WHEEL. In crossing a gully which entered the creek near another station, called Chilberengaba, we broke a wheel, and though we had travelled only about seven miles we were obliged to encamp, and remain until the carpenter and the smith could repair it. ATTEMPT TO ASCEND MARGA. In the meantime I set out with the native guide for the summit of Marga, which proved to be one of my old fixed points. It was about seven miles south-west of our camp; but after a most fatiguing ascent of two steep and rocky ridges, during great heat, I was obliged to return without reaching Marga. At the cattle station we heard of a bullock which had been left by us in an exhausted state during our last expedition; and we succeeded in bringing it in, and in laying the yoke on its neck for another visit to the banks of the Darling; it was fitter than any other of our working bullocks. I added a second species of Psoralea to that discovered yesterday, a small graceful plant with racemes of purplish minute flowers, elevated far above the leaves, and on slender stalks so tough as to be broken only with some difficulty.* (*Footnote. P. tenax, Lindley manuscripts; herbacea, depressa, perennis, glabra, foliis glandulosis palmatim 5-foliolatis, foliolis linearibus vel lineari-oblongis obtusis, racemis cylindraceis longissime pedunculatis erectis, leguminibus ovatis scabris glabris.) March 21.