The Astronomer Royal (as Maskelyne had now become) explained the method of using his lunar tables (reprinted four years later in the first Nautical Almanac) to find the longitude.
Umphathiswa wezifundo ngeenkwekwezi wasebukhosini uMaskelyn, wabhentsisa inkqubo yokusebenzisa izicwangciso zakhe zenyanga (ezashicilelwa kwiminyaka emine kamva kwincwadi yokuqala yonyaka eneengcombolo zobume zinkwenkwezi neethayidi ebisezisetyenziswa ngoomatiloshe.