The general course was now west-north-west through a country with rich grassy valleys and dense scrubs of brigalow acacia on the higher ground. Green grass was abundant at this time; but I fear that in seasons of drought few of the waterholes are permanent; the timber consists of ironbark, box, and a few other species of eucalyptus--the brigalow acacia attaining the height of thirty feet; soft brown sandstones of the coal measures are the prevailing rock, forming hills with table summits. 2nd April. With some difficulty, owing to the dense scrubs, we crossed the basaltic ridge which divides the eastern waters flowing to the Dawson River from those trending to the west into the basin of the Maranoa River, a tributary of which--probably the Merivale River--was followed westward. The country became more sandy, timbered with ironbark, cypress, etc. The whole was, however, well grassed, and suited for grazing, if not too heavily stocked. 5th April. Reaching the Maranoa River in about latitude 25 degrees 45 minutes, water was scarcely procurable in the sandy bed, and we had to dig wells to obtain a supply. 7th April to 12th April. Warned by the fact that Messrs. H. Gregory and Haly had been unable to penetrate the country to the west from scarcity of water, even three months earlier in the season, we followed up the Maranoa to Mount Owen, and having found a sufficient supply of water and grass for a few days' halt, I proceeded to reconnoitre the country to the west, and at length found a practicable route to the tributaries of the Warrego River, to which the party was advanced. A heavy shower of rain had filled the gullies in this locality, and green grass clothed the country, forming a striking contrast to the dry and waterless valley of the Maranoa. 15th to 16th April. Fine openly timbered valleys, well suited for pasture, alternated with ridges of scrub of brigalow acacia till we reached Mount Playfair, a basaltic hill on the sandstone ridge which separates the Warrego Valley from that of the Nive, a small branch of which was followed down to its junction with the main channel in latitude 25 degrees 6 minutes. The soil in the valley of the Nive is sandy, thinly grassed, and openly timbered with ironbark spotted gum, etc.; the back country rising into low sandstone ridges, covered with dense scrub of brigalow acacia. Some pools of permanent water containing small fish were passed, on the bank of which the remains of numerous native camps were seen. 17th April.