The observations for determining the longitudes of the various parts of the coast were taken with a circle and a sextant by Troughton: besides these valuable instruments we had three chronometers of Arnold's make, namely, 413 (box) 2054 (pocket) and 394 (pocket); of which the two first were supplied by the Admiralty.

One of these in my own case was a little electric flash- light taken for the purpose of reading the verniers of a theodolite or sextant in star observations.

We'll take it both by levels and by triangulation, using an old sextant of the Professor's.

Far and wide over the stormy waters of the Mediterranean this meteor glowed, inviting and guiding the mariners in; and both its welcome and its guidance were doubly prized in those ancient days, when there was neither compass nor sextant on which they could rely.

Chips couldn't tell much before he went under, but the Southern Cross was boarded by the Devil's Admiral sure enoughdidn't they find a sextant out of her in a store in Shanghai?

Because of these high altitudes of the sun the sextant with artificial horizon could not be used unless one depended upon star observations altogether, an uncertain dependence because of the many cloudy nights.