20TH NOVEMBER.--Travelling south by compass, we found a tolerably open forest, and the Mooni on our left, until we fell in with Mr. Kennedy's track on riding back. Following this (as he had been guided back by an experienced stockman), we at length crossed the Mooni, and fell into a cart-track leading southward, and at a few miles beyond where we fell into that track, we encamped on the left bank of the Mooni; a tree at this camp being marked 86. Again we saw, in the woods about this camp, the HYLOCOCCUS SERICEUS R. Br., a remarkable tree, with oblong leaves, and fruit resembling a small orange. It is a curious genus, and belongs to the poisonous order of Spurgeworts. We found here also, the HELICHRYSUM SEMIPAPPOSUM D. C.; ACACIA SPECTABILIS; a new species of BEYERIA, near B. VISCOSA, Mig.; the variety of CASSIA SOPHERA (Linn.) cultivated in some botanical gardens, under the name of C. SOPHERELLA; a beautiful tree with pinnate leaves and spreading panicles of large white flowers, called THOUINIA AUSTRALIS; the EUCALYPTUS BICOLOR A. Cunn. MS., a species closely allied to E. HOEMATOMMA Sm., but the marginal nerve is not so close to the edge of the leaf (this is the "bastard box" of the carpenters); a fine new large-flowered SIDA[*]; and it appears that the "Yarra" tree of the natives here, is a new Eucalyptus, which Sir William Hooker calls E. ACUMINATA.[**] [* S. (ABUTILON) TUBULOSA (All. Cunn. MS.); tota velutino-pubescens, foliis cordato-ovatis (sinu profundo angusto) sublonge acuminatis dentatoserratis, stipulis subulatis flaccidis, pedunculis axillaribus solitariis unifloris folio brevioribus, calyce elongato tubuloso 5-fido laciniis acuminatis, petalis (flavis) vix duplo brevioribus.--W. J. H.] [** E. ACUMINATA (Hook. MS.); foliis alternis petiolatis lanceolatis longe acuminatis subaristatis penninerviis glaucis reticulatis nervis lateralibus a margine remotiusculis, floribus umbellatis (4-6-floris), umbellis pedunculatis, calycis tubo hemisphaerico in pedicellum gracilem attenuato, calyptra conico-acuminato calycis tubum superante.] Just as we sat down here, rain came on; the wind changed to S. W. and the sky looked more portentous of rainy weather than we had ever seen it on this journey. Now this was the first country in which we had any reason to dread wet weather, since we crossed the Culgoa about the beginning of April. Here rain would render the ground impassable, and inundate the country. The mercury in the barometer was falling, and so was the rain. Thermometer, at sunrise, 61 deg.; at noon, 62 deg.; at 4 P.M., 57 deg.; at 9, 53 deg.;-- with wet bulb, 53 deg..