"Let in each Eclipse (not all, but for instance) three of these Spots, which then lye nearest to the Ecliptic, be exactly observ'd, when they are first touched by the true Shadow, and again when they are just completely entred into it; and (if you please) also in the Decrease of the Eclipse, when they are first fully clear from the true Shadow: For the accurate Determination of which Moments of Time (that being in this Business of main Importance) let there be taken Altitudes of remarkable fixed Stars, on this side the Line, of such as lye between the Æquator and Tropic of Cancer; but beyond the Line, of such as are situated towards the other Tropic; and in all Places, of such, as at the time of Observation, arc about four Hours distant from the Meridian.
