In the afternoon of the day following that of our arrival at Moorundi, Mr. Piesse arrived with the drays, and drew them up under the fine natural avenue that occupies the back of the river to the south of Mr. Eyre's residence. Shortly afterwards Davenport arrived with the light cart, having the instruments and Mr. Browne's baggage. Flood also came up with the sheep, so that the expedition was now complete, and mustered in its full force for the first time, and consisted as follows of officers, men, and animals:-- Captain Sturt, LEADER. Mr. James Poole, ASSISTANT. Mr. John Harris Browne, SURGEON. Mr. M'Dougate Stuart, DRAFTSMAN. Mr. Louis Piesse, STOREKEEPER. Daniel Brock, COLLECTOR. George Davenport,) SERVANTS Joseph Cowley, ) Robert Flood, STOCKMAN. David Morgan, WITH HORSES. Hugh Foulkes, ) John Jones, ) ---- Turpin, ) BULLOCK DRIVERS William Lewis, sailor, ) John Mack ) John Kerby, WITH SHEEP. 11 horses; 30 bullocks; 1 boat and boat carriage; 1 horse dray; 1 spring cart; 3 drays. 200 sheep; 4 kangaroo dogs; 2 sheep dogs. The box of instruments sent from England for the use of the expedition had been received, and opened in Adelaide. The most important of them were two sextants, three prismatic compasses, two false horizons, and a barometer. One of the sextants was a very good instrument, but the glasses of the other were not clear, and unfortunately the barometer was broken and useless, since it had the syphon tube, which could not be replaced in the colony. I exceedingly regretted this accident, for I had been particularly anxious to carry on a series of observations, to determine the level of the interior. I manufactured a barometer, for the tube of which I was indebted to Captain Frome, the Surveyor-General, and I took with me an excellent house barometer, together with two brewer's thermometers, for ascertaining the boiling point of water on Sykes' principle. The first of the barometers was unfortunately broken on the way up to Moorundi, so that I was a second time disappointed. It appears to me that the tubes of these delicate instruments are not secured with sufficient care in the case, that the corks placed to steady them are at too great intervals, and that the elasticity of the tube is consequently too great for the weight of mercury it contains. The thermometers sent from England, graduated to 127 degrees only, were too low for the temperature into which I went, and consequently useless at times, when the temperature in the shade exceeded that number of degrees. One of them was found broken in its case, the other burst when set to try the temperature, by the over expansion of mercury in the bulb.