(*Footnote. Having submitted specimens of the water from these and other salt lakes of the interior to my friend Professor Faraday, I have been favoured with the following particulars respecting their contents: "All of them are solutions of common salt much surpassing the ocean or even the Mediterranean in the quantity of salt dissolved. Besides the common salt there are present (in comparatively small quantity) portions of sulphates and muriates of lime and magnesia: the waters are neutral and except in strength very much resemble those of the ocean. That labelled Greenhill Lake 24th July had a specific gravity of 1049.4 and three measured ounces gave on evaporation 97 grains of dry salts. That labelled Mitre Lake 24th July had a specific gravity of 1038.6, and three measured ounces of it yielded 77 grains of dry saline matter. The water labelled Cockajemmy Lake Camp 20th September had a specific gravity of 1055.3 and the amount of dry salts from three measured ounces was 113 grains.") NATIVES ILL DISPOSED. As we proceeded over the open ground before we reached the spot where we finally encamped several natives appeared at a great distance in a valley eastward of Mount Nicholson, and Piper went towards them supported by Brown whom I sent after him on horseback. They proved to be three or four gins only, but Piper continued to pursue them to the top of a hill, when a number of men armed with spears suddenly started from behind trees and were running furiously towards Piper when Brown rode up. On presenting his pistol they came to a full stop, thereby showing that they had some idea of firearms, although they refused to answer Piper's questions or to remain longer. In the evening, four of them approaching our camp, Piper went forward with Burnett to meet them. They advanced to the tents apparently without fear, and I obtained from them the names of various localities. On being questioned respecting Cadong, they told us that all these waters ran into it, and pointed to the south-east, saying that I should by-and-bye see it. When I found we could obtain no more information I presented the most intelligent of them with a tomahawk, on which they went slowly away, repeatedly turning round towards us and saying something which, according to Piper, had reference to their tribe coming again and dancing a corrobory, a proposal these savage tribes often make and which the traveller who knows them well will think it better to discourage. SINGULAR WEAPON.