The middle of the eclipfe, deduced from a mean of feveral 

 obferved equal verfed fines, differed but eleven feconds from that 

 deduced from the beginning and end of total darknefs. 



The Aftronpmer Royal was fo obliging as to fend me the 

 correfpondent obfervations at Greenwich ; and as the longi- 

 tude of Dublin is not yet accurately determined, the diffe- 

 rence of longitude deduced from the mean of thefe may be 



D 2 of 



