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Nuyts' Archipelago.]

being the entrance to a river. No land was visible to the north-east; and besides quantities of grass and branches of trees or bushes floating in the water, there was a number of long, gauze-winged insects topping about the surface, such as frequent fresh-water lakes and swamps. In order to form a judgment of how much fresh, was mixed with the salt water, or whether any, I had some taken up for the purpose of ascertaining its specific gravity; but before the experiment could be made, the depth diminished to 3 fathoms, and low land was distinguished nearly all round. We then veered ship; and at seven o'clock came to an anchor in 6 fathoms, off a small beach on the north side of the western and smallest island, being sheltered at all points except between S. 58° and N. 80° W.

The specific gravity of the water taken up proved to be 1,034, or ,008 greater than the water of the Southern Indian Ocean, westward of the Island Amsterdam; although the temperature in which it was weighed, was higher by 14°. This circumstance, with the shallowness of the inlet and the land having been seen to close round so nearly, made me give up the intention of attempting to proceed any higher up, since no river of importance was to be expected.

Great flocks of sooty petrels were observed coming in from sea to the island, and at the first dawn next morning, a boat was sent to collect a quantity of them, and to kill seals; but the birds were already moving off, and no more than four seals, of the hair kind, were procured. The botanists preferred going on shore to the more eastern land, which, though low, was much more extensive than the island nearer to the ship; and in fact, it was not yet ascertained whether it were not a part of the main. I went to the higher island with a theodolite to take bearings; and as the survey had shown that no dependence was to be placed in any observations taken on board the ship during the last five days, I took with me the necessary instruments for determining the latitude and longitude.

Granite was found to compose the rocks of the shore, and seemed to be the basis of the island; but it was covered with a crust