Page:A Voyage to Terra Australis Volume 1.djvu/152

cxxx

their mothers, in it, and have heard them all in tumult together, may form a good idea of the confused noise of the seals at Cone Point. The sailors killed as many of these harmless, and not unamiable creatures, as they were able to skin during the time necessary for me to take the requisite angles; and we then left the poor affrighted multitude to recover from the effect of our inauspicious visit.

My 8th station was taken, in returning to the schooner, upon the south end of the eastern Passage Isle; 9th, the south-west end of the western Passage Isle; and 10th, the south-east point of Clarke's Island. The 11th and last station was at Look-out Head, the bearings from which included some parts of the southern land, between the extremes of S. 20° 20′ E. and S. 59° 35′ W. At these different stations, the needle of the theodolite was sometimes found to vary one or two degrees from itself, as it had done at Preservation Island; an effect which I attribute to the attraction of the rocks, having since experienced the same, and even greater, differences in most places where the rocks, as here, are granitic.

In the wider parts of Armstrong's Channel there are many shoals of sand on each side, but a passage of sufficient width and depth is swept out by the tides, for ships to go through in safety. The bottom is either rocky or sandy: rocky in the deep and narrow parts, where the tides run three or four miles in an hour; and sandy in the bights and shoaler places. The sand of the beaches is mostly granitic, but it sometimes consists of black metallic particles, such as are found in the stone of the islands.

It was not until Feb. 25 that the remains of the Sydney-Cove's cargo were all on board, and that a favourable change in the wind permitted us to sail for Port Jackson. These four days of detention enabled me to continue the survey along the south side of Preservation Island, and as far as the Bay of Rocks upon that of Cape Barren. A meridian altitude from the south horizon, observed under more favourable circumstances than two others before taken,