The island of Teneriffe is situated in latitude as observed in the road, 28 deg. 29’ 5” north, and longitude, determined by the time-keeper, 16 deg. 18’ 00” west.

We steered to the south-west until we were near the meridian of the island of Sal, the northernmost of the Cape De Verde Islands, and then shaped our course so as to fall in a little to the eastward of it.  At 10 in the evening of the 18th, being at no great distance from the island, we made the signal for the convoy to shorten sail, the distance not being sufficient to admit of our carrying sail all night; at nine the next morning we saw the island bearing north-west by north, distant four leagues:  I make the latitude of the north end 16 deg. 48’ north, and its longitude, determined by the time-keeper, is 23 deg. 03’ west, the south end is in latitude 16 deg. 39’ north.  We steered from abreast the center of this island, south half east by compass, which carried us about three or four miles wide of the reef, which extends from the north-east part of Bonavista, and runs from the shore in a south-east direction three or four miles:  it was about two o’clock in the afternoon when we made the island of Bonavista, so that we had a very good opportunity of seeing the reef, from which I observe Captain Cook says, in one of his voyages, he was in great danger, and that it lies off the south-east part of the island; which is certainly a mistake, for we ran down the east side of the island, at the distance of three miles from the reef, and I make its latitude and longitude as follows:—­

Island of Bonavista: 
Latitude of the north end 16 deg. 13’ north. 
Longitude by time-keeper 22 deg. 51’ west. 
Latitude of the south end 16 deg. 00’ north. 
Variation of the compass 11 deg. 19’ west.

At twelve o’clock at night, having an intention of anchoring in Port Praya Bay, in the island of Saint Jago, we made the signal and brought-to till day-light; we then made sail, the weather very hazy, which is generally the case among these islands:  we ran close round the south end of the isle of May, and stretched over for the south end of Saint Jago; but when we opened Port Praya Bay, we were suddenly taken aback with the wind from north-west, and every ship appeared to have the wind in a different direction.  In this situation it was thought that any attempt to gain the anchorage under such unfavourable circumstances might be attended with the danger of some of the ships getting on board each other; it was therefore determined to give up the intention, and the signal was made for that purpose.

The object for which we endeavoured to get into this bay, was, a supply of fresh vegetables for the ships companies and convicts, an article with which we had been but scantily provided at Teneriffe.  Port Praya Bay, on the island of Saint Jago, is situated in latitude 14 deg. 54’ north, and longitude 23 deg. 37’ west.  This was about noon of the 20th of June, and we took our leave of these islands, and steered to the southward, intending to cross the equator, if possible, two or three deg. to the eastward of the meridian of Saint Jago.