[Note 20: The water had not a pleasant flavour, as it was of a chalybeate nature; but in a country where water was scarce, it was invaluable. When I was here in 1839, it had even then this disagreeable taste, but now it was much worse, in consequence, probably, of the contaminating substance being washed off more abundantly than formerly from the rocks enclosing the reservoir by the rapid flow of water necessary to replace the large consumption of my party.] The spring is situated in latitude 32 degrees 49 minutes 0 seconds S. and about three miles south-east from the most southerly bight of Streaky Bay. About one mile and a half to the west is another small hole of better flavoured water, but not so abundant in its supply. I found all the horses in excellent condition, and one, a very fine mare of my own, had foaled about six weeks before. Around the camp were immense piles of oyster shells, pretty plainly indicating the feasting my men had enjoyed during my absence, whilst their strong and healthy appearance shewed how well such fare had agreed with them. The oysters were procured from the most southerly bight of Streaky Bay, on some mud banks about two or three hundred yards below low water mark, where they are found in immense numbers and of different sizes. The flavour of these oysters was excellent, and the smaller ones were of great delicacy. The men were in the habit of taking a cart down to the beach frequently, where, by wading up to their knees in the sea at low water, they were enabled to fill it. This supply lasted for two or three days. Many drays might easily be loaded, one after the other, from these oyster beds. The natives of the district do not appear to eat them, for I never could find a single shell at any of their encampments. It is difficult to account for the taste or prejudice of the native, which guides him in his selection or rejection of particular kinds of food. What is eaten readily by the natives in one part of Australia is left untouched by them in another, thus the oyster is eaten at Sydney, and I believe King George's Sound, but not at Streaky Bay. The unio or freshwater muscle is eaten in great numbers by all the natives of New South Wales and South Australia; but Captain Grey found that a Perth native, who accompanied him on one of his expeditions, would not touch this kind of food even when almost starving. Snakes are eaten by some tribes, but not by others; and so with many other kinds of food which they make use of. About three o'clock, Mr. Scott arrived with the dray, after a long and harassing stage of twenty miles over a low, stony, and scrubby tract of country, between Mount Hall and Streaky Bay, and which extended beyond our track to the coast hummocks to the west. These latter appeared somewhat high, and under them we had seen many salt-water lakes from the summit of Mount Hall.