Note 100 — BARTHOLOMEW SHARP AND OTHERS.

Navigators of that time could determine latitudes almost as accurately as it is now done, but they had very imperfect means of determining longitudes. These pirates, of course, had no chronometer. The best they could do was to keep account each day of the courses and estimated distances that they sailed, to reduce this to numbers of miles eastward and westward in different latitudes (their "eastings" and "westings"), measured from their last known position, Duke of York Island, and from these computations to deduce their probable longitude. It appears from Ringrose's fuller statements that they were several hundred miles out of their reckoning when they sighted Barbados.