"The mouth of Swan River is in latitude 32 degrees 4 minutes 31 seconds, and longitude 113 degrees 26 minutes 28 seconds East of Paris, or (115 degrees 46 minutes 43 seconds East of Greenwich). The channel is obstructed by a bar of rocks, which it is very difficult to pass over, and, indeed, impracticable if the wind blows from the sea. On entering, the passage is on the starboard side: it is narrow and shoal, and divided into two channels; in each of which there is from five to six feet of water; after passing this, there is seven and eight feet: the course must then be towards the west, to avoid two shoals, which are upon the right bank: after half a mile the navigation is free, and in mid-channel the depth is not less than seven, eight, and nine feet. The river then trends in a northerly direction for seven miles, without any sinuosity of consequence. On the eastern bank, are two shoals; the passage is then on the opposite side of the river, the depth of which is eight feet: beyond these banks the course of the river trends to the eastward towards a low point, upon which there is a solitary tree; an extensive bank fronts this point, and the channel continues on the western shore, ten feet deep. Here the river is a mile broad; it then increases its width, and forms spacious bays on either side, that were not examined. To the South-East is an opening, which may probably be an arm of the river; it was called MOREAU INLET; it was not examined. Opposite to it is a sharp point, fronted by a shoal, and the channel is on the eastern side of the river, with thirteen feet water. Here the river widens and forms a basin, two miles and a half wide: a little above this the river is blocked up by shoals and islets (HEIRISSON ISLES) between which the depth is not more than two or three feet, but afterwards deepens gradually from five to fifteen feet: the banks of the river are then not more than one-third of a mile wide, and then continue in a serpentine course, with a channel from seven to ten feet deep, and free from shoals, as far as the French boats examined it. The stream of the river ran very slowly, and winds through a valley, one side of which is abrupt and precipitous, and when it ceases to be so on one side, the heights immediately appear on the other."