[ I40 3 



the afternoon in Barbadoes, make four hours 

 difference j and the hours between the longitudes 

 of the two places, makes in all about feven 

 hours ; which féems but a fmall fpace of time to 

 extend a motion over one of the greateft oceans 

 on the earth, the diftance of Barbadoes from 

 Lifbon being about equal to fifty degrees of the 

 earth's latitude. 



A Brief 



