[ 574 ] 
By the comparifon of the longitude determined 
by the Moon, with the longitude by the common 
reckoning, we feem to have been fet by a current to 
the eaftward about 20 miles per day, between Fe- 
bruary 10th and 15th, while we were paffing from 
1 7° to 5 0 north latitude, at the didance of about 1 1° 
wedward of the coad of Guinea ; and I am told that 
fhips palling near the coad of Guinea always meet 
currents, which fet them in upon the land, which 
are fo much the dronger the nearer they approach the 
coad; as on the contrary, if they approach the op- 
podte coad of the Brafils, they will be fet by a current 
to the wed ward, which appears to have been our 
cafe; for between February 19th and 28th, during 
which time we paded by the mod eadern part of the 
coad of Brafils, leaving cape St. Augudin only 6° to 
the wed of us, we appear to have been fet by a cur- 
rent at the rate of 20 miles per day to the wedward, 
and from this time to our arrival at St. Helena, we 
feem to have been continually fet to the wedward, 
though dower than before ; which mud have been 
owing to our approaching fo much nearer, and con- 
tinuing lo much longer near the eadern coad of South 
America, than the wedern coad of Africa. 
Though I had no obfervation of the Moon within 
lefs than eight days of my arrival at St. Helena, I 
make the longitude of the idand, by my account, to 
be only 1JL 0 ead of its true dtuation, which is 5^® 
wed of London; whereas the account kept in the 
common manner made the idand 1 - 1 ° ead of London, 
or yJL° ead of its true dtuation, and mod of the ac- 
counts on board the diip made it 1 o° ead of the true 
longitude. Having got twelve obfervations in the 
compafs 
