September 13.—UPON leaving the depot this morning I was obliged to leave behind a very large tarpaulin which we did not require, and which from the extra weight we had last night put upon the drays, we could not conveniently carry. Steering to the south–west we came at twelve miles to the head of Spencer’s Gulf, and crossed the channel connecting it with Lake Torrens. At this place it is not very wide, but its bed like that of the lake is soft and boggy, with salt water mixed with the mud. We had a good deal of difficulty in getting over it, and one of the drays having stuck fast, we had to unload it, carrying the things over on men’s backs. A few miles beyond this we halted for the night, where there was good grass for the horses and plenty of water in the puddles around us. We crossed principally during the day, a rather heavy sandy country, but were now encamped in plains of a firmer and better character for the drays.