March 13.—­We proceeded six or seven miles down the river, in a S.S.W. course.  The flats continued on its right side, but rose at a short distance into low ridges, covered either with scrub or with a very stunted silver-leaved Ironbark.  On one of the flats we met with a brood of young emus, and killed three of them.  The morning was bright; cumuli gathered about noon, and the afternoon was cloudy.  The wind was from the eastward.  The Suttor is joined, in lat. 21 degrees 25 minutes, by a large creek from the N.W.  From the ridges on the left bank of the creek I obtained an extensive view.  The bluff termination of the ranges on the head of the Isaacs bore N. 55 degrees E. Many high ranges were seen towards the north and north-east.  Towards the south the horizon was broken only by some very distant isolated mountains.  Peak Range was not visible.  A group of three mountains appeared towards the north-west; one of them had a flat top.  The whole country to the westward was formed of low ridges, among which the Suttor seemed to shape its winding course.  The hills on which we stood, as well as the banks of the creek, were composed of flint-rock.  Pebbles and blocks of Pegmatite covered the bed of the creek.  This rock also cropped out along the river.  This was the first time since leaving Moreton Bay that we met with primitive rocks, and I invite the attention of geologists to the close connection of the flint rock with granitic rocks; which I had many opportunities of observing in almost every part of the northern and western falls of the table land of New England.

A Melaleuca with very small decussate leaves, a tree about twenty-five feet high, was growing on the scrubby ridges.  Flooded-gums of most majestic size, and Casuarinas, grew along the river; in which there were many large reedy water-holes.  The season must be more than usually dry, some of the largest holes containing only shallow pools, which were crowded with small fishes, seemingly gasping for rain.  A Ruellia, with large white and blue flowers, adorned the grassy flats along the Suttor.  The latitude of this spot was 21 degrees 26 minutes 36 seconds.

March 14.—­We removed down the river about eight miles S. S. W. to good water-holes, which had been seen by my companions the day before.  Here the scrub approached the river, leaving only a narrow belt of open forest, which was occasionally interrupted by low ridges of stunted silver-leaved Ironbark.  Pegmatite and Porphyry (with a very few small crystals of felspar) and Gneiss? were observed in situ.  On our way we passed a fine lagoon.  A dry but not hot wind blew from the S. S. W.; the night and morning were bright; cumuli with sharp margins hung about after eleven o’clock.

A pelican was seen flying down the river, and two native companions and an ibis were at the water-holes.  Crows, cockatoos, and ducks were frequent.  From the remains of mussels about these water-holes, the natives have enjoyed many recent meals.