Ivî EXPLANATION OF THE PLAIES. 



them to the Eafl ; and as Jamaica is about i8 degrees to, 

 the North of the Line, tiiefe feeds and tortoifes would be 

 driven afhorc on the coafl; of Africa of the fame Latitude, 

 and not in the 59th degree North, oij the çoalls of the 

 Hebrides and Orkneys, where, in fact, they çlo come 

 afhore. 



The Current, therefore, whi-ch v/afts them along, pro- 

 ceeds in a northern diredlion, tending a little toward the 

 Eaft, precifely as the Atlantic channel itfelf does, in that 

 part of it. Accordingly, the important ol?fervations of 

 the inhabitants of Scotland, on the fubjecl of the grains of 

 the Ifland of Jamaica, of the turtles of America, and of a 

 fragment of the maft of the Tilbury^ thrown upon their, 

 coafts, inconteftably prove that thç Atlaotiç Current cornea 

 from the South, and fets in to the North, as Navigators arc 

 difpofed to believe. But it has this direftion only in, our Win- 

 ter ; for I am going to demonflrate by another obfç.rvation, 

 no lefs curious, that in Summer, and in the fame Latitudes, 

 the Atlantic Currerit comes from the North, and fets in to 

 the South, in dire6l oppofition to the pretended aclion of 

 the Moon between the Tropics, and contrary to the opi- 

 nion of Navigators. But I ought not to fay opinion^ fo^. 

 they have not a well-informed opinion on the fubjecl. 



We have already produûed the teftimony of the moft re- 

 fpcclable northern Navigators, who unanimoufly bear wit- 

 nefs, that the Atlantic Current comes from the North, and 

 fets in to the South in Summer, in it's northern extremity : 

 fuch are thofe of EJlisy of Barents^ of Linjchotleriy &c. who, 

 having navigated, in Summer, toward the vicinity of the arc- 

 tic polar Circle, attelt that the Currents, and even the ticks 

 have a foutherly dircèlion, anddcfcend from the North, or, 



at 



