The approach of night obliged us to return to the camp. On our arrival, we found that the state of Henwood and Williams would prevent our stirring for a day or two. Not only had they a return of inflammation, but several other of the men complained of a painful irritation of the eyes, which were dreadfully blood-shot and weak. I was in some measure prepared for a relapse in Henwood, as the exposure which he necessarily underwent on the plain was sufficient to produce that effect; but I now became apprehensive that the affection would run through the party. Considering our situation in its different bearings, it struck me that the men who were to return to Wellington Valley with an account our our proceedings for the Governor's information, had been brought as far as prudence warranted. There was no fear of their going astray, as long as they had the river to guide them; but in the open country which we were to all appearance approaching, or amidst fields of reeds, they might wander from the track, and irrecoverably lose themselves. I determined, therefore, not to risk their safety, but to prepare my dispatches for Sydney, and I hoped most anxiously, that ere they were closed, all symptoms of disease would have terminated. In the course of the day, however, Spencer, who was to return with Riley to Wellington Valley, became seriously indisposed, and I feared that he was attacked with dysentery. Indeed, I should have attributed his illness to our situation, but I did not notice any unusual moisture in the atmosphere, nor did any fogs rise from the river. I therefore the rather attributed it to exposure and change of diet, and treated him accordingly. To my satisfaction, when I visited the men late in the evening, I found a general improvement in the whole of them. Spencer was considerably relieved, and those of the party who had inflammation of the eyes no longer felt that painful irritation of which they had before complained. I determined, therefore, unless untoward circumstances should prevent it, to send Riley and his companion homewards, and to move the party without loss of time. We had not seen any natives for many days, but a few passed the camp on the opposite side of the river on the evening of the 25th. They would not, however, come to us; but fled into the interior in great apparent alarm. DEPARTURE OF TWO MEN FOR WELLINGTON. On the morning of the 26th, the men were sufficiently recovered to pursue their journey. Riley and Spencer left us at an early hour; and about 7 a.m. we pursued a N.N.W. course along the great plain I have noticed, starting numberless quails, and many wild turkeys, by the way. Leaving that part of the river on which Mr. Hume and I had touched considerably to the left, we made for the point of a wood, projecting from the river line of trees into the plain. The ground under us was an alluvial deposit, and bore all the marks of frequent inundation.