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APPENDIX. No. VII. 
Hydrographical Remarks from the Island of St. Thomas, to the Mouth of the 
Zaire. 
1816. 16th May. At noon the land was reported to be seen from the mast- 
head, and immediately after from the deck: it was Prince’s Island; and 
bore S E b. S, 12 or 14 leagues distant. By our observations the centre of it 
lies in lat. 1°35’ N, long. 7°17' 45 E; variation about 21° W. We continued 
endeavouring to get to the southward, with light airs from S to S W, anda 
strong current setting to the northward ; and on the ith, at daylight, saw the 
Island of St. Thomas, bearing Sb. W 12 or 11 leagues. We remained two 
days in sight of it, making scarcely any way to the southward, which induced us 
to stand to the westward, hoping to get the wind more westerly, and less cur- 
rent ; in both of which expectations we were disappointed: nor did we succeed 
in getting to the southward of this island until the 27th, having been obliged to 
stand so far to the westward as 4° E, and then passed only about 4 leagues to the 
southward of it. ‘The little island of Rolle, at the south end of St. Thomas, 
lies on the equinoctial line, and in long. about 6° 44’ 37" E. We continued work- 
ing to the southward, taking every advantage of the wind, and frequently trying 
for soundings without obtaining them, until the 3d of June, when, at noon, we 
had 173 fathoms greenish ouse, and immediately saw the coast of Africa. Lat, 
observed 2° 10'S, long. 9° 29’ E. The land was about 1 leagues to the east- 
ward, which would make the longitude of the coast in the above latitude im 9° 
41’/E. The land appeared low, but owing to the weather being hazy, and our 
standing off from it, we were not able to make any remarks. The bank of 
oundings here does not probably run farther off shore than ten leagues, deep- 
ening as follows: at 10 or 12 miles off shore 18 fathoms, greenish ouze. We 
then ran S WiW 5 miles, and had 30 fathoms, coarse sand; then S W 3 miles 
further, 47 fathoms, sand and broken shells: then S Wb. W 4 miles, 67 fa- 
thoms, same bottom, and S Wb. W1 W 4 miles, no bottom with 130 fathoms, 
(these courses are from the true meridian). From this day (the 5th), we conti- 
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