vationssea or?ho dis-s in thee wererofeil'or;ory ofbles, soe moonrbit, to

several

rument

rienced

tied thehalf aiaed tovhole ais equi-gitude..ter de-e takenstar onty pe r '

urnent,

attend

correct

ta these

: stlUCh

nearer

LET.X. OF THE LATITUDE AND LONGITUDE. 17$

nearer the truth than if either of them be takenseparately.

This method of determining the longitude, bymeans of the moon’s distance from the fun andcertain fixed stars, was first recommended, forits superior excellence, by the celebrated Dr.Edmund Halley, and has since been adoptedby all the most eminent astronomers in Europe.The perfection, however, to which it is nowarrived, is, in a great measure, owing to theexertions of Dr. Mafkelyne, the present Astro-nomer Royal, to whom we are indebted forthe publication of the Nautical Almanac, theRequisite Tables, and several other useful per-formances, which have been found of the utmostservice to Navigation.

N 2. LET-